Articulo
Antifungal applications for nano-additives synthesized with a bio-based approach Autores:Gámez Espinosa, Erasmo Barberia Roque, Leyanet Folashade Obidi, Olayide Deyá, Marta Cecilia Bellotti, Natalia Fecha: 2020-03-30Tipo de documento: ArticuloResumen:Filamentous fungi are microorganisms that cause deterioration of structural materials due to their ecological plasticity and vegetative functions. Functionalised sol-gel based products can be used to control this kind of biodeterioration through the association to antifungal active additives which a...Compartir:
Self-lubricating Cu-MWCNT coatings deposited from an ecofriendly glutamate-based electrolyte Autores:Bengoa, Leandro Nicolás Seré, Pablo Ricardo Pary, Paola Conconi, María Susana Folgueiras, José Morel, Eneas Torga, Jorge Egli, Walter Alfredo Fecha: 2020-03-06Tipo de documento: ArticuloResumen:Self-lubricating coatings have been studied for a long time due to their convenience compared to systems which need periodic lubrication. For this reason, Cu-CNT composite coatings with high wear resistance and low coefficient of friction were obtained by electrodeposition from an ecofriendly alkali...Compartir:
Organo-montmorillonite with biogenic compounds to be applied in antifungal coatings Autores:Fernández, Mariela Alejandra Barberia Roque, Leyanet Gámez Espinosa, Erasmo Deyá, Marta Cecilia Bellotti, Natalia Fecha: 2020-01-01Tipo de documento: ArticuloResumen:Antimicrobial surfaces are required to obtain more hygienic indoor environments. There are biogenic compounds like terpenoids, from plant essential oils, with potential antimicrobial activity. Besides, modified montmorillonites are promising nanoscale carriers for these compounds. The aim of this re...Compartir:
Hygienic coatings with bioactive nano-additives from Senna occidentalis mediated green synthesis Autores:Barberia Roque, Leyanet Folashade Obidi, Olayide Gámez Espinosa, Erasmo Viera, Marisa Bellotti, Natalia Fecha: 2019-11-06Tipo de documento: ArticuloResumen:Nowadays urban populations spend 90% of their time in buildings where microbial growth lead to hazardous environments which produce health problems characterized by irritation of the respiratory tract, infections, allergies and asthma. Some research lines seek to obtain antimicrobial materials to pr...Compartir:
Physical, mechanical properties and antimicrobial analysis of a novel CaO·Al<SUB>2</SUB>O<SUB>3</SUB> compound reinforced with Al or Ag particles Autores:Gómez de Saravia, Sandra Gabriela Rastelli, Silvia Elena Ortega Avilés, Mayahued González Morán, Carlos Rocha Rangel, Enrique Miranda Hernández, José Fecha: 2019-05-29Tipo de documento: ArticuloResumen:Ceramic-metal (CaO·Al2O3–Al and CaO·Al2O3–Ag) compounds were prepared by mechanical milling and consolidated through an in-situ sintering process. The aim of this work is to study the effects of the Al and Ag particles to ceramic-base compound, primarily in the microstructure, and its mechanic...Compartir:
Characterization of indoor air mycobiota of two locals in a food industry, Cuba Fecha: 2019-05-01Tipo de documento: ArticuloResumen:The aim of this work was to characterize the air mycobiota of two production plants, one of artisanal chocolate and another of products for special regimes in a food factory in Cuba at different times of the year. The air was sampled during 1 year every 25 days distributed in rainy season and non-ra...Compartir:
Primers based on tara and quebracho tannins for poorly prepared steel surfaces Autores:Byrne, Christian Eduardo D'Alessandro, Oriana Selmi, Gonzalo Julián Romagnoli, Roberto Deyá, Marta Cecilia Fecha: 2019-01-01Tipo de documento: ArticuloResumen:Steel panels must be protected during storage and transportation because they can corrode.This protection used to be afforded by chromate primers, but now a days tannin-based primers are being studied.These primers are not only used as protection but also as adhesion promoter if the steel surfacewas...Compartir:
Tanino de Tara (Caesalpinia spinosa) como precursor de un inhibidor de corrosión para acero SAE 1010 Tanino de Tara (Caesalpinia spinosa) como precursor de un inhibidor de corrosión para acero SAE 1010Autores:D'Alessandro, Oriana Selmi, Gonzalo Julián Byrne, Christian Eduardo Deyá, Marta Cecilia Romagnoli, Roberto Fecha: 2018-11-01Tipo de documento: ArticuloResumen:Los taninos de Tara (Caesalpinia spinosa) se han estudiado como una alternativa eficaz para la protección anticorrosiva del acero. El objetivo de su empleo es reemplazar a los pigmentos tradicionales que contienen cromo hexavalente. En este trabajo, se formularon y aplicaron imprimaciones temporari...Compartir:
Transesterification of soybean and castor oil with methanol and butanol using heterogeneous basic catalysts to obtain biodiesel Autores:Navas, Marisa Belén Lick, Ileana Daniela Bolla, Patricia Araceli Casella, Mónica Laura Ruggera, José Fernando Fecha: 2018-09-01Tipo de documento: ArticuloResumen:This paper focuses on the preparation and characterization of CaO, MgO and ZnO, both bulk and supported on γ-Al2O3 and their catalytic activity in the transesterification of soybean oil and castor oil with methanol and butanol in order to produce biodiesel. XRD, SEM, CO2-adsorption followed by TGA ...Compartir:
Protección antiincrustante de estructuras sumergidas mediante recubrimientos formulados con 7-hidroxi-4-metilcumarina Autores:Ruiz, Diego Manuel Autino, Juan Carlos Romanelli, Gustavo Pablo Pérez, Miriam Cristina García, Mónica Teresita Roldán, Juan Pablo Blustein, Guillermo Fecha: 2018-07-01Tipo de documento: ArticuloResumen:La fijación de micro y macroorganismos sobre estructuras sumergidas como embarcaciones, boyas, granjas de cultivo, plataformas offshore acarrea enormes pérdidas económicas como consecuencia del deterioro de materiales y el retiro de servicio. Dado que las regulaciones vigentes apuntan a la utiliz...Compartir:
Low Density Wood Impregnation with Water-Repellent Organosilicic Compounds Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Many protective treatments for low density wood are applied by impregnation to give water-repellency and to control pathologies that usually have this substrate. The properties of Araucaria angustifolia , chemically modified by impregnation with methyltriethoxysilane, n-octyltriethoxysilane and mix...Compartir:
Síntesis y caracterización de “tanatos” de lantano como inhibidores de la corrosión Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Los taninos son polifenoles sintetizados por las plantas. Se encuentran en la madera del Quebracho (Schinopsis balansae), los frutos de la Tara (Caesalpinia spinosa), etc. Han sido incorporados en la industria de la pintura como agentes “antifouling” y como inhibidores de la corrosión en soluci...Compartir:
Formulation and assessment of Wash-Primer containing lanthanum tannate for steel temporary protection Autores:D'Alessandro, Oriana Selmi, Gonzalo Deyá, Marta Cecilia Di Sarli, Alejandro Ramón Romagnoli, Roberto Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Tannins are polyphenols synthesized by plants and useful for the coating industry as corrosion inhibitors. In addition, lanthanum salts have a great inhibitory effect on steel corrosion. The aim of this study was to obtain lanthanum ‘‘tannate’’ with adequate solubility to be incorporated as ...Compartir:
Natural compounds as additives in paints for controlling algae growth Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Algae are a diverse group of photosynthetic organisms ranging from microscopic single-cell micro-organisms to very large organisms such as seaweed. Microalgae belonging to Chlorophyta (green algae) and Cianophyta (blue-green algae) commonly occur in biofilms. Actually, these phototrophic biofilms ar...Compartir:
Lanthanum Derivative from “Tara” Tannin for Steel Temporary Protection Autores:D'Alessandro, Oriana Selmi, Gonzalo Julián Deyá, Marta Cecilia Di Sarli, Alejandro Ramón Romagnoli, Roberto Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Tannins are extracted from certain plants and contain numerous phenol groups. They may be employed, together with their derivatives, to formulate protective coatings due to their inhibitive properties. The objective of this research was to synthesize lanthanum “tannates”, to formulate washprimer...Compartir:
Tanino de quebracho colorado chaqueño (<i>Schinopsis balansae</i>) como precursor de un inhibidor de corrosión para acero de bajo contenido de carbono Autores:D'Alessandro, Oriana Selmi, Gonzalo Julián Byrne, Christian Eduardo Deyá, Marta Cecilia Romagnoli, Roberto Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Los taninos del Quebracho colorado chaqueño (Schinopsis balansae) se han estudiado como una alternativa para la eficaz protección anticorrosiva del acero, con el fin de reemplazar a los pigmentos tradicionales que contienen cromo hexavalente, altamente cuestionado por su toxicidad y carcinogenicid...Compartir:
Preparation and characterization of silanes films to protect electrogalvanized steel Fecha: 2018-01-01Tipo de documento: ArticuloResumen:Silanes are an interesting alternative to chromate-based surface treatments for temporary protection of electrogalvanized steel. In this work, the protective behavior of 3-mercaptopropyltrimethoxysilane (MTMO), 3-aminopropyltriethoxysilane (AMEO), or 3-glycidoxypropyltrimethoxysilane (GLYMO) films ...Compartir:
Zeolites as reservoirs for Ce(III) as passivating ions in anticorrosion paints Autores:Roselli, Sol Natacha Deyá, Marta Cecilia Revuelta, Mariana Valeria Di Sarli, Alejandro Ramón Romagnoli, Roberto Fecha: 2018-01-01Tipo de documento: ArticuloResumen:The aim of this paper was to evaluate the performance of two different modified zeolitic minerals as anticorrosion pigments in order to reduce or eliminate zinc phosphate in paints. In the first stage, the selected minerals were characterized and modified with cerium ions to obtain the anticorrosion...Compartir:
Triplex systems: Accelerated and outdoor tests Fecha: 2018-01-01Tipo de documento: ArticuloResumen:The protective paint/galvanized steel system is called duplex and it is claimed that protects steel from corrosion synergistically. The triplex system adds a pretreatment between the paint and the substrate in order to enhance the corrosion protection or paint adhesion. In this work, the behavior ag...Compartir:
Efecto de la concentración del silano MTMO sobre la protección contra la corrosión de acero electrocincado Fecha: 2017-01-01Tipo de documento: ArticuloResumen:Los pretratamientos superficiales a base de silanos son una de las alternativas más prominentes para reemplazar a los cromatos como protectores temporarios de sustratos metálicos expuestos a la acción de ambientes agresivos. El mecanismo de protección de los silanos, por efecto barrera, hace que...Compartir:
Anticorrosive water borne paints free from zinc and with reduced phosphate content Autores:Roselli, Sol Natacha Lendvay-Györik, Gabriela Míszaros, Gabor Deyá, Marta Cecilia Romagnoli, Roberto Fecha: 2017-01-01Tipo de documento: ArticuloResumen:The objective of this research was to formulate water-borne epoxy coatings free from zinc and with reduced phosphate levels, replacing zinc phosphate by calcium acid phosphate. Lanthanum molybdate was incorporated as a green anticorrosive pigment to enhance paint anticorrosive performance. Paints we...Compartir:
The anti-corrosion performance of water-borne paints in long term tests Fecha: 2017-01-01Tipo de documento: ArticuloResumen:One of the most inexpensive and effective method to protect steel against corrosion is paints containing active pigments. The traditional way to test these coatings performance is by accelerated tests (exposition to salt spray and/or humidity chambers) and electrochemical tests (corrosion potential...Compartir:
Silane as adhesion promoter in damaged areas Autores:Deyá, Marta Cecilia Fecha: 2016-01-01Tipo de documento: ArticuloResumen:Silanes have been studied as adhesion promoters between metals (aluminum, galvanized steel and steel) and paints such as polyurethanes. The objective of this work was to study γ-glycidoxypropyltrimethoxysilano (glymo) as adhesion promoter between sandblasted steel and one water-based epoxy paint fo...Compartir:
Synergism in anticorrosive paints Fecha: 2016-01-01Tipo de documento: ArticuloResumen:The present work depicts synergism anticorrosive behaviour between zinc hypophosphite and zinc phosphate in a commercial pigment mixture. Also, the performance of anticorrosive paints was evaluated. Synergism anticorrosive behaviour was evaluated by corrosion potential and linear polarization measur...Compartir:
Inhibidor anticorrosivo eco-amigable para recubrimientos acuosos protectoras del acero: <i>Ylex paraguariensis</i> (yerba mate) Fecha: 2016-01-01Tipo de documento: ArticuloResumen:En este trabajo fue evaluado la capacidad anticorrosiva de extractos de la yerba mate ( Ilex paraguariensis ) sobre el acero SAE 1010, a fin de ser incorporado en una pintura anticorrosivo. El extracto acuoso se obtuvo a partir de la mezcla de hojas y palos de yerba mate de dos marcas comerciales. L...Compartir:
Effect on Temporary Protection and Adhesion Promoter of Silane Nanofilms Applied on Electro-galvanized Steel Autores:Seré, Pablo Ricardo Banera, Mauro Jonathan Egli, Walter Alfredo Elsner, Cecilia Inés Di Sarli, Alejandro Ramón Deyá, Marta Cecilia Fecha: 2016-01-01Tipo de documento: ArticuloResumen:In this paper, the effectiveness of γ-mercaptopropyltrimethoxysilane (MTMO) films as temporary corrosion protection and adhesion promoter on electro-galvanized steel was studied. The films were synthesized from hydrolyzed MTMO with ethanol or methanol, applied by immersion on electro-galvanized ste...Compartir:
Study of silane layers grown on steel and characterized using ellipsometry at different wavelengths and incidence angles Autores:Seré, Pablo Ricardo Zerbino, Jorge Omar Maltz, Alberto Leonardo Elsner, Cecilia Inés Di Sarli, Alejandro Ramón Fecha: 2016-01-01Tipo de documento: ArticuloResumen:Films of gmercap to propyltri methoxysilane are prepared by hydrolysis, condensation and curing at 80 oC. The optical indices, n, k and the thickness d are calculated using the ellipsometry technique.Aprogramme is developed to fit a wide set of ellipsometric and data in the visible optical reg...Compartir:
Síntesis verde y caracterización de sólidos de matriz silícea con cobre y plata obtenidos a partir de dos precursores para su aplicación como aditivos antifúngicos Fecha: 2015-09-01Tipo de documento: ArticuloResumen:La síntesis de nuevos productos con actividad antimicrobiana, amigables con el medio ambiente, aplicados a la formulación de recubrimientos que prevengan la formación de biopelículas es un tema que ha cobrado gran relevancia en los últimos años. Las biopelículas producen cambios indeseables (...Compartir:
Fracción aislada de <i>Ricinus communis</i> L. (Euphorbiaceae) en el control del biodeterioro de documentos patrimoniales Autores:Paz Naranjo, José de la Gómez de Saravia, Sandra Gabriela Battistoni, Patricia Adriana Larionova, María Guiamet, Patricia Sandra Fecha: 2015-02-01Tipo de documento: ArticuloResumen:Microorganismos, insectos y roedores causan alteraciones en documentos y objetos de interés patrimonial. Para combatirlos son empleados numerosos métodos; algunos causan un impacto negativo en el medio ambiente, dañan la salud del personal que los aplica y aceleran el proceso natural de deterioro...Compartir:
Preparation of ɣ-Mercaptopropyltrimethoxysilane's Films to Protect Steel Against Corrosion Autores:Deyá, Marta Cecilia Fecha: 2015-01-01Tipo de documento: ArticuloResumen:Traditionally, chromates and phosphates were used as pretreatments for metals to protect them from corrosion during a temporary period. Nowadays, due to their toxicity, replacements are being study. The most studied compounds are based on silanes and, among them, glicidoxypropyltrimethoxysilane, ami...Compartir:
Bacterial biofilms formed in arsenic-containing water: biodeterioration of water network materials Fecha: 2015-01-01Tipo de documento: ArticuloResumen:The immersion of any material in a water system triggers a surface microbial colonization which simultaneously influences the corrosion behavior of the substratum. The present study was focused on the As(V) influence on the biofilm formation and their consequences on the corrosion behavior of differ...Compartir:
Corrosion behaviour of Zinc or 55% Al Zn hot-dip coated steel in 0.5 m NaCl solution Fecha: 2015-01-01Tipo de documento: ArticuloResumen:Acomparative study on the anticorrosive behaviour of 55%Aluminum-Zincalloy and Zinc hot-dip coated carbon steel immersed in 0.5 mol/L NaCl solution was performed using DC (polarization curves) and AC (electrochemical impedance spectroscopy) techniques. Also, the corrosion products formed under these...Compartir:
Evaluation of pH-sensitive poly(2-hydroxyethyl methacrylate-co-2 (diisopropylamino)ethyl methacrylate) copolymers as drug delivery systems for potential applications in ophthalmic therapies/ocular delivery of drugs Fecha: 2015-01-01Tipo de documento: ArticuloResumen:Smart polymers like pH sensitive systems can improve different pharmacological treatment. In this work the behavior of copolymers containing 2-hydroxyethyl methacrylate (HEMA) with different proportions of 2-(diisopropylamino) ethyl methacrylate (DPA) and different amounts of cross-linker agent, eth...Compartir:
Evaluación de timol para el control antifúngico sobre películas de pintura Fecha: 2015-01-01Tipo de documento: ArticuloResumen:La colonización microbiana en el interior de los edificios preocupa en forma creciente no solo por el deterioro estético que puede ocasionar en los revestimientos sino por los problemas de salud que causan los microorganismos en personas con bajas defensas o con problemas respiratorios. En este se...Compartir:
Corrosion in 316L Porous Prostheses Obtained by Gelcasting Fecha: 2015-01-01Tipo de documento: ArticuloResumen:Gelcasting (GC) process, usually used for ceramic moulding, is adapted for producing spongy or porous metal osteosynthesis components destined to bone void filling. The main objective of the interconnected porosity is to improve the osteoconductive of metal matrix by ingrowth of bone. Further, poros...Compartir:
Corrosion of Painted Galvanneal Steel Fecha: 2015-01-01Tipo de documento: ArticuloResumen:The annealing galvanized steel (Galvanneal) is produced from hot-dip galvanized steel thermally treated. The result is a coating formed by Fe-Zn phases. Its main advantage over the conventional galvanized steel is the absence of the characteristic spangles affecting these coatings and the presence o...Compartir:
Corrosion Performance of Steel Coated with Different Duplex Systems and Exposed to Salt Spray and Continuous Immersion Tests Fecha: 2014-01-01Tipo de documento: ArticuloResumen:55%Al-Zn alloy coated steel sheets pre-treated with 5% Fe (NO3)3 + 15% H3PO4 solution, coated with acrylic (AC), alkyd (AQ), vinyl (VL), solvent-based epoxy (ES) or waterborne epoxy (EA) corrosion-inhibiting primers + a barrier topcoat alkyd paint, and exposed to different media were studied. Exposu...Compartir:
Characterization and Corrosion Resistence of Galvanized Steel//Passivation Compositive/Polyuethane Paint Systems Fecha: 2014-01-01Tipo de documento: ArticuloResumen:The corrosion performance of electrogalvanised steel sheets pre-treated with a Cr3+ or Cr+6-based conversion layer and then covered with polyurethane-waterborne topcoat paint has been studied. The pre-treated metallic panels were coated with one of the three tested polyurethane (PU) topcoat paints, ...Compartir:
Behaviour of two eco-compatible duplex systems used in the construction industry against corrosion Fecha: 2014-01-01Tipo de documento: ArticuloResumen:Two types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore,...Compartir:
Corrosion Behaviour of Steel/55% Al-Zn Alloy/Paint Systems Exposed to Natural and Artificial Environments Fecha: 2014-01-01Tipo de documento: ArticuloResumen:The corrosion performance of steel/55%Al–Zn alloy sheets pre‐treated with 5% Fe (NO3)3þ15% H3PO4 solution, and then coated with acrylic (AC), alkyd (AQ), vinyl (VL), solvent‐based epoxy (ES) or waterborne epoxy (EA) corrosion‐inhibiting primersþa barrier topcoat alkyd paint was studied. Ex...Compartir:
Lanthanum-exchanged zeolite and clay as anticorrosive pigments for galvanized steel Autores:Roselli, Sol Natacha Bellotti, Natalia Deyá, Marta Cecilia Revuelta, Mariana Valeria Del Amo, Delia Beatriz Romagnoli, Roberto Fecha: 2014-01-01Tipo de documento: ArticuloResumen:A wide variety of inhibitive pigments is now being offered as possible alternatives to chromate and lead compounds for painted metals protection. Unfortunately, the most wide spread of these substitute pigments, zinc phosphate, has, at present, raised some environmental concern because phosphate cau...Compartir:
Effect of Oxidizing Concentration on the Corrosion Resistance of the Cerium Conversion Coatings on Galvanized Steel Autores:Culcasi, José Daniel Elsner, Cecilia Inés Di Sarli, Alejandro Ramón Palomino, Luis Tomachuk, C. R. Costas, Isolda Fecha: 2014-01-01Tipo de documento: ArticuloResumen:Ce-based conversion films have been assessed as alternatives for replacement of Cr6+-based films,which have been forbidden for their toxicity and carcinogenic properties. However, corrosion protection associated with chromate films is difficult to achieve by other surface treatments. Experimental re...Compartir:
A Conversion Layer Based on Trivalent Chromium and Cobalt for the Corrosion Protection of Electrogalvanized Steel Autores:Di Sarli, Alejandro Ramón Culcasi, José Daniel Tomachuk, C. R. Elsner, Cecilia Inés Ferreira Jr., J. M. Costa, Isolda Fecha: 2014-01-01Tipo de documento: ArticuloResumen:The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium (Cr6+) compounds have widely been used to formulate conversion layers providing better anticorrosive protection as well as anchorage properties to p...Compartir:
Effect of secochiliolide acid isolated from the Patagonian shrub Nardophyllum bryoides as active component in antifouling paints Autores:Pérez, Miriam Cristina García, Mónica Teresita Sánchez, Marianela Stupak, Mirta Elena Mazzuca, Marcia Palermo, Jorge A. Blustein, Guillermo Fecha: 2014-01-01Tipo de documento: ArticuloResumen:Environmental concerns about the use of toxic antifoulants have led to an increased interest in the development of new alternatives. So far, most of the antifouling natural products have been obtained from marine organisms. However, some secondary metabolites from terrestrial plants could be promisi...Compartir:
Protection of Galvanized Steel with Silanes: Its Comparison with Chromium (VI) Autores:Seré, Pablo Ricardo Deyá, Marta Cecilia Egli, Walter Alfredo Elsner, Cecilia Inés Di Sarli, Alejandro Ramón Fecha: 2014-01-01Tipo de documento: ArticuloResumen:The corrosion behavior of hot dip galvanized steel (HDGS) pre-treated with mercaptopropyltrimethoxysilane and a commercial sulfur-bearing silane was studied. Electrochemical polarization, electrochemical impedance spectroscopy, and electrochemical noise tests showed that silane coatings have a corro...Compartir:
Behavior of two eco-compatible duplex systems used in the construction industry against corrosion Fecha: 2014-01-01Tipo de documento: ArticuloResumen:Two types of coated steels are currently competing in the construction industry: the hot-dip galvanized steel (HDGS) and the 55%Al–Zn alloy coated steel (HDZAS). Both systems are typically coated by a chromate-based conversion film, which is dangerous for human health and environment. Furthermore...Compartir:
Evaluación de la actividad insecticida de tierras de diatomeas de yacimientos argentinos Autores:Fusé, Cecilia Beatriz Villaverde, María Luciana Padín, Susana Beatriz Giusto, Mario Ángel de Juárez, Marta Patricia Fecha: 2013-08-01Tipo de documento: ArticuloResumen:El uso de tierras de diatomeas (TDs) como insecticida de bajo riesgo para la salud humana y el ambiente está registrado en numerosos países para la protección de granos almacenados. Se evaluó la capacidad insecticida de TDs obtenidas de yacimientos argentinos mediante bioensayos con coleópteros...Compartir:
Avaliação do sistema Zn-Cr III-revestimento orgânico por espectroscopia de impedância eletroquímica Autores:Martins Queiroz, Fernanda Elsner, Cecilia Inés Tomachuk, C. R. Di Sarli, Alejandro Ramón Costa, Isolda Fecha: 2013-01-01Tipo de documento: ArticuloResumen:Corrosion control of electrogalvanized steel employing Cr VI based treatments is widely known and studied. However, researchers have been trying to find out alternatives to replace these salts once they must be banned in accord to environmental and industrial guidelines. Cr III – based conversion ...Compartir:
The application of bioactive compounds from the food industry to control mold growth in indoor waterborne coatings Autores:Bellotti, Natalia Salvatore, Luis Alberto Deyá, Marta Cecilia Del Panno, María Teresa Del Amo, Delia Beatriz Romagnoli, Roberto Fecha: 2013-01-01Tipo de documento: ArticuloResumen:Microbial growth in indoor environments creates health problems, especially in people with asthma; approximately 80% of these patients are allergic to mold. Antimicrobial coatings are formulated to generate surfaces that are easy to clean and may also incorporate active agents, commonly called bioci...Compartir:
The assessment of a smart anticorrosive coating by the electrochemical noise technique Fecha: 2013-01-01Tipo de documento: ArticuloResumen:Zinc phosphate and related compounds are convenient replacements for chromates. However, more eco-compatible pigments are being investigated. The objective of this research was to develop a modified zeolitic rock which is intended to replace phosphate pigments in anticorrosive paints. The modified z...Compartir:
Epoxysilane as adhesion promoter in duplex system Autores:Deyá, Marta Cecilia Fecha: 2013-01-01Tipo de documento: ArticuloResumen:Coatings are one of the most used protection methods for metals. Metallic coatings, such as zinc and its alloys, are used to protect steel in mild corrosive environments. In aggressive environments, on the other hand, organic coatings must be employed in the so-called duplex systems. However, the ga...Compartir:
Ceramic microsphere to improve anticorrosive permanence of phosphate paints Fecha: 2012-01-01Tipo de documento: ArticuloResumen:Zinc phosphate and related compounds have been proposed as “green” replacements for traditional anticorrosive pigments such as zinc chromate and lead oxides. However, environmental concerns have risen in the last years because the disposal of these materials in the environment increased phosphat...Compartir:
Tratamientos de conversión atóxicos y eco-compatibles para la protección de acero electrocincado Fecha: 2012-01-01Tipo de documento: ArticuloResumen:La resistencia a la corrosión de recubrimientos basados en cinc puro puede ser mejorada mediante la aplicación de adecuados tratamientos de pasivación. Los compuestos de cromo hexavalente han sido ampliamente utilizados para la formulación de películas de conversión capaces de proveer mejor pr...Compartir:
Behavior of Electrogalvanized Steel Pre-Treated with Cr(III)-Based Baths and Exposed to 0.5 M Na<SUB>2</SUB>SO<SUB>4</SUB> Solution Fecha: 2012-01-01Tipo de documento: ArticuloResumen:As Cr (VI) compounds used to formulate conversion layers provide enhanced anticorrosive protection to zinc coatings, but they are produced using hazardous chemicals, the development of “green” technologies is a paramount purpose. Consequently, the corrosion behavior of zinc coatings subjected to...Compartir:
Improvement of anticorrosive performance of phosphate-based alkyd paints with suitable additives Autores:Blustein, Guillermo Deyá, Marta Cecilia Romagnoli, Roberto Di Sarli, Alejandro Ramón Del Amo, Delia Beatriz Fecha: 2011-01-01Tipo de documento: ArticuloResumen:The purpose of this investigation was focused on reducing the content of zinc phosphate in anticorrosive paints by means of the incorporation of low quantities of selected soluble corrosion inhibitors. The article describes the anticorrosive behavior of alkyd paints containing reduced levels of zinc...Compartir:
The anticorrosive performance of zinc-free non-toxic pigment for paints Autores:El-Hamid, Diri Blustein, Guillermo Deyá, Marta Cecilia Del Amo, Delia Beatriz Romagnoli, Roberto Fecha: 2011-01-01Tipo de documento: ArticuloResumen:The objective of this research was to study the efficiency of calcium aluminium phosphosilicate hydrate (PSh),as anticorrosive pigment for paints in simulated aggressive environments.This compound is zinc free and the phosphate content is less than 30% by weight. Alkyd and epoxy paints, of the solv...Compartir:
Evaluation of eco-friendly anticorrosive pigments for paints in service conditions Fecha: 2010-09-01Tipo de documento: ArticuloResumen:The performance of different replacements for chromates was studied. The anticorrosive properties of seven phosphate-based pigments, a calcium-exchange silica and a ferrite were assessed by electrochemical techniques and formulating solvent-borne paints with epoxy and alkyd resins. Paints contained ...Compartir:
Antifouling Paints with Zinc “Tannate” Fecha: 2010-01-01Tipo de documento: ArticuloResumen:During the past decade, the necessity of new ecofriendly antifouling pigments was established. Among these new pigments, special attention should be paid to tannin and its derivatives. Tannins are synthesized by plants as part of their defense mechanism against the attack of pathogens. The objective...Compartir:
Hojalata: Evaluación de su comportamiento frente a la corrosión en medios acuosos Fecha: 2010-01-01Tipo de documento: ArticuloResumen:Las primeras etapas del deterioro de chapas comerciales de hojalata expuestas a distintas soluciones salinas fueron estudiadas mediante técnicas electroquímicas y de análisis de superficie complementadas por microscopia óptica y electrónica de barrido. Sus resultados fueron analizados e interpr...Compartir:
Morphology and Corrosion Resistance of Cr(III)-based conversion treatments for electrogalvanized steel Fecha: 2010-01-01Tipo de documento: ArticuloResumen:The effectiveness of Cr(VI)-based passivation treatments is well accepted but there are many problems with regard to their environmental suitability. Because these compounds are carcinogenic and toxic, eco-friendly systems capable of replacing them are being evaluated. In this work, the corrosion be...Compartir:
Anti-Corrosion Performance of Cr+6-Free Passivating Layers Applied on Electrogalvanized Fecha: 2010-01-01Tipo de documento: ArticuloResumen:Hexavalent chromium-based passivation treatments have been successfully used as promoters of conversion coatings for many years. Their effectiveness is without question although there are many problems with regard to their environmental suitability. Hexavalent chromium compounds are carcinogenic and...Compartir:
Corrosion Resistance of Cr(III) Conversion Treatments Applied on Electrogalvanised Steel and Subjected to Chloride Containing Media Fecha: 2010-01-01Tipo de documento: ArticuloResumen:The corrosion resistance of pure zinc coatings can be improved through the application of suitable chemical passivation treatments. Hexavalent chromium compounds have widely been used to formulate conversion layers providing better anticorrosive protection as well as anchorage properties to painting...Compartir:
Comunicacion
Actividad biocida de tres compuestos de origen natural sobre bacterias y microalgas Fecha: 2019-01-01Tipo de documento: ComunicacionResumen:Las plantas sintetizan metabolitos que tienen propiedades antimicrobianas, son ambientalmente amigables y podrían constituir una alternativa a los antimicrobianos tradicionalmente empleados reduciendo los efectos adversos sobre el medioambiente. Se evaluó la actividad antimicrobiana y alguicida de...Compartir:
Natural compounds as potential algaecides for waterborne paints Fecha: 2018-01-01Tipo de documento: ComunicacionResumen:To eliminate and prevent the formation of phototrophic biofilms on painted walls, chemicals are added to paints. These chemicals, in general, also have toxic effects on the environment. Plants synthesize secondary metabolites which have antimicrobial properties and that may be a sustainable alternat...Compartir:
Documento institucional
Memoria 1984: Actividades científicas y técnicas del Centro de Investigación y Desarrollo en Tecnología de Pinturas (CIDEPINT) Fecha: 1984-01-01Tipo de documento: Documento institucionalResumen:Actividades del CIDEPINT del año 1984 en los siguientes temas: - Administración - Actividades científicas y técnicas - Rendición general de cuentas...Compartir:
Objeto de conferencia
Pinturas con actividad biológica Autores:Romagnoli, Roberto Fecha: 2018-01-01Tipo de documento: Objeto de conferenciaResumen:Las pinturas con actividad biológica se utilizan para la protección de distintos tipos de sustratos contra la colonización y/o invasión por diferentes organismos vivos. La variedad de organismos que pueden tomar contacto con un sustrato es muy variada: bacterias, hongos, algas, organismos incrus...Compartir:
Effect of AgNPs and AgNPs-go on the bioadhesion of <i>Pseudomonas aeruginosa</i> on stainless steel surfaces Autores:Rastelli, Silvia Elena Angulo Pineda, Carolina Palza, Humberto Viera, Marisa Gómez de Saravia, Sandra Gabriela Fecha: 2018-01-01Tipo de documento: Objeto de conferenciaResumen:With the aim of incorporating nanohybrid materials in antimicrobial coatings, the inhibition of the adhesion of Pseudomonas aeruginosa on 430 AISI stainless steel coupons exposed to AgNPs and AgNPs-GO solutions was studied. AgNPs were obtained by green synthesis, while AgNPs-GO by exsitu and in-situ...Compartir:
Estudios preliminares para la formulación de una pintura para colectores solares a base de pigmentos absorbentes selectivos Fecha: 2017-01-01Tipo de documento: Objeto de conferenciaResumen:La tecnología de calentamiento de agua que utiliza radiación solar ya está desarrollada; es simple, eficiente, barata y segura. Existen muchas variantes de sistemas, pero existe una en particular que implica cero costo en la obtención de agua caliente y que ofrece garantía de durabilidad. La im...Compartir:
Desarrollo de electrolito de cobreado en medio alcalino libre de cianuro Autores:Pary, Paola Bengoa, Leandro Nicolás Baliño, Julieta Seré, Pablo Ricardo Egli, Walter Alfredo Fecha: 2017-01-01Tipo de documento: Objeto de conferenciaResumen:Desde ya hace muchos años en la industria de la galvanoplastia se utilizan los electrolitos basados en cianuro para obtener recubrimientos de cobre. Estos electrolitos son altamente tóxicos y se están haciendo numerosas investigaciones con el fin de obtener alternativas para su reemplazo. El obje...Compartir:
Comportamiento frente al fuego de madera tratada con “Whey Proteins” Fecha: 2017-01-01Tipo de documento: Objeto de conferenciaResumen:Edificios y objetos patrimoniales construidos con madera se han vista afectados, en muchas oportunidades, por los efectos devastadores del fuego, provocando pérdidas humanas y materiales. Si bien, existen en la actualidad numerosos productos que mejoran la performance de la madera frente al fuego, ...Compartir:
Estudio de la pátina biológica y ensayos de limpieza en el Mausoleo Yalour, Cementerio de La Plata Autores:Rosato, Vilma Gabriela Gómez de Saravia, Sandra Gabriela Rastelli, Silvia Elena Lofeudo, Rosana Fecha: 2017-01-01Tipo de documento: Objeto de conferenciaResumen:El mausoleo de Yalour es un monumento realizado en hormigón armado martelinado, ubicado en un lote especial cedido por el Consejo Deliberante, diseñado por el ingeniero platense Enrique Boudet y construido por Armando J. Frehner entre 1931 y 1932, destacándose en el frente una escultura de una es...Compartir:
Influence of As (V) on the diversity of biofilms formed on different substrata Autores:Rastelli, Silvia Elena Viera, Marisa Fecha: 2016-01-01Tipo de documento: Objeto de conferenciaResumen:Microorganisms, including bacteria, present in natural and artificial aquatic environments, tend to attach to and grow on immersed surfaces developing a biofilm. Many problems in drinking water networks such as corrosion, persistence of pathogenic species and increased resistance to biocides are due...Compartir:
Evaluation of biocides in oilfield environments using fluorescent <i>in-situ</i> hybridization Fecha: 2016-01-01Tipo de documento: Objeto de conferenciaResumen:Microbiologically influenced corrosion and souring of oilfield reservoirs are process frequently provoked by the sulphate-reducing bacteria. The most common method applied in the industry for preventing or controlling the deleterious effect caused by the presence of microorganisms is the addition of...Compartir:
Evaluation of biofilms formation and corrosion of steel by microscopic techniques and electrochemical impedance spectroscopy Fecha: 2016-01-01Tipo de documento: Objeto de conferenciaResumen:A clean metal surface which contacts natural or industrial waters undergoes a series of processes that lead to the formation of inorganic deposits and biofilms. In these structures, microorganisms adhere irreversibly to the substrate, embedded in a matrix of extracellular polymeric substances (EPS)....Compartir:
Development of green hygienic coating based on essential oil microcapsules Fecha: 2016-01-01Tipo de documento: Objeto de conferenciaResumen:The challenges for developing new materials are accomplishing more functionality with less material due to the increasing efficiencies of the smart approaches. In this sense, the coating technology based on the incorporation of microcapsules has emerged recently as a strategy in the advance of prote...Compartir:
Aplicación de grafeno en recubrimientos antifouling Autores:Viera, Marisa Rastelli, Silvia Elena Dalfovo, María Celeste Ibáñez, Francisco Javier Gómez de Saravia, Sandra Gabriela Fecha: 2015-01-01Tipo de documento: Objeto de conferenciaResumen:La adherencia de microorganismos sobre diferentes materiales y el desarrollo de “biofilms” generan problemas de biocorrosión, pérdida de rendimiento de equipos, biodeterioro de materiales, etc. Puede afectar el normal funcionamiento de sistemas como tuberías de distribución de agua, equipami...Compartir:
Arsénico en agua: influencia en el desarrollo de biopeliculas bacterianas y en el biodeterioro de redes de distribución Fecha: 2014-01-01Tipo de documento: Objeto de conferenciaResumen:Los sistemas de distribución de agua están expuestos a microorganismos capaces de adherirse a la superficie de los conductos y formar biopelículas, causando frecuentemente el deterioro de los mismos. Otro problema es la contaminación de las aguas con compuestos químicos de diverso origen, como ...Compartir:
Silane as pretreatment for protection of steel Autores:Pisesale, Julieta Deyá, Marta Cecilia Fecha: 2013-01-01Tipo de documento: Objeto de conferenciaResumen:Steel has been used as structural material for ages although it interacts with the environment loosing its main important property. The aim of this research was to study different times of silane hydrolysis in order to obtain better anticorrosive protection of steel. The substrates employed were san...Compartir:
Effect of arsenic on microorganisms and biofilms in MIC of water network materials Fecha: 2013-01-01Tipo de documento: Objeto de conferenciaResumen:Microorganisms in natural and artificial aquatic environments attach to wet surfaces to form a biofilm (Dexter, 2003), which causes problems such as microbially induced corrosion (MIC), increased resistance to biocides and persistence of pathogenic species. Arsenic (As) is being increasingly detecte...Compartir:
Corrosión de acero galvanizado recocido ("galvanneal") pintado Fecha: 2013-01-01Tipo de documento: Objeto de conferenciaResumen:El acero galvanizado recocido (“Galvanneal”) se obtiene realizando un tratamiento térmico al acero galvanizado. El resultado es un recubrimiento formado por fases de Fe-Zn. Su principal ventaja frente al galvanizado es que no presenta la “flor” característica de estos recubrimientos y al t...Compartir:
Cerium modified minerals for eco-friendly anticorrosive paints Autores:Roselli, Sol Natacha Revuelta, Mariana Valeria Di Sarli, Alejandro Ramón Deyá, Marta Cecilia Romagnoli, Roberto Fecha: 2013-01-01Tipo de documento: Objeto de conferenciaResumen:This paper deals with the replacement of zinc phosphate by a natural zeolite, modified with Ce(III) ions. The inhibitive properties of rare earth metals are very well known and the zeolite would act as a “carrier” for these ions. Alkyd paints were formulated replacing totally and partially zinc ...Compartir:
Nuevas mezclas pigmentarias para pinturas anticorrosivas Fecha: 2012-01-01Tipo de documento: Objeto de conferenciaResumen:El objetivo de este trabajo fue ensayar, como probables pigmentos anticorrosivos, mezclas de fosfato de cinc, benzoato de cationes metálicos (hierro, aluminio o cinc) o sílice intercambiada, con una zeolita modificada con iones cerio. Las propiedades anticorrosivas de las mezclas pigmentarias se e...Compartir:
Microscopy applied to biofilms in drinking water closed loop Fecha: 2011-01-01Tipo de documento: Objeto de conferenciaResumen:During water distribution operation, tubing material is submitted to permanent contact with aquatic microbial species. They colonise the network surface forming biofilms which frequently cause corrosion on metallic substrata. The present study approaches the analyses of laboratory biofilms formed on...Compartir:
Metallurgical Factors Affecting Microbial Colonisation and Corrosion of Drinking Water Network Materials Fecha: 2010-01-01Tipo de documento: Objeto de conferenciaResumen:The present work reports the studies performed to investigate the influence of some metallurgical factors in the microbial colonisation and corrosion of drinking water network materials. Cold rolling process applied to row materials submitted to drinking water dynamic tests seems not to affect subst...Compartir:
Resumen
Estudio y caracterización de biopelículas fotosintéticas mediante diferentes técnicas microscópicas Fecha: 2018-01-01Tipo de documento: ResumenResumen:Las superficies expuestas al ambiente exterior soportan una gran variedad de microorganismos, organizados en complejas biopelículas, constituidas por bacterias y cianobacterias, algas verdes, protozoos, rotíferos, nematodos y una amplia variedad de hongos (Gaylarde et al 2011). Si bien algunos aut...Compartir:
Efecto de un biocida sobre las poblaciones microbianas en un sistema de almacenamiento de petróleo Fecha: 2018-01-01Tipo de documento: ResumenResumen:El almacenamiento es un elemento de gran valor en la explotación de los servicios dehidrocarburos debido a que actúa como pulmón entre la producción y el transporte y permite la sedimentación de agua y barros del crudo antes de despacharlo por oleoducto o a destilación. Esta sedimentación tra...Compartir:
Modificación del color en pinturas con zirconia/Ag Fecha: 2018-01-01Tipo de documento: ResumenResumen:Las pinturas aplicadas sobre diferentes sustratos pueden verse afectadas por el biodeterioro debido al crecimiento de hongos sobre la superficie. Las pinturas higiénicas son aquellas que se formulan con aditivos antimicrobianos. Entre estos aditivos, los más estudiados son los compuestos de plata:...Compartir:
Evaluation of desulfovibrio adherence on three different polymeric coatings Autores:Viera, Marisa Rastelli, Silvia Elena Gómez de Saravia, Sandra Gabriela Nicolino, S. Rodríguez Bauzada, V. Bruno, S. Zapponi, M. Castro, Pablo Francisco Fecha: 2018-01-01Tipo de documento: ResumenResumen:Microbiological Induced Corrosion is a big concern in oil and gas market, mainly in water injectors and disposal wells in which the alternative of candidate materials are CRA´s with very high PREM (Pitting Resistance Equivalent Number) or coated carbon steel....Compartir:
Preparación y estudio estructural de complejos metálicos con sulfametazina como ligando Autores:Mojica Sepúlveda, Ruth Dary Villa Pérez, Cristian Echeverría, Adriana Rastelli, Silvia Elena Viera, Marisa Cabello, Carmen Inés Soria, Delia Beatriz Fecha: 2017-01-01Tipo de documento: ResumenResumen:La sulfametazina (SMT) (4-amino-N[4,6-dimethyl-2-pyrimidinyl] es un antimicrobiano utilizado en veterinaria y de amplio espectro incluido dentro del grupo de las sulfas absorbibles. Esta familia de compuestos presentan un amplio espectro de acción, afectando a distintos microorganismos: bacterias G...Compartir:
Effect of THPS on the structure and diversity of the microbial populations in a process of microbially influenced corrosion Fecha: 2017-01-01Tipo de documento: ResumenResumen:The accumulation of water and sludge in oil storage tanks leads to microbial contamination. The study of these microbial communities is of particular interest, especially the sulfate reducing microorganisms (SRM) which are mainly responsible for microbiologically influenced corrosion (MIC). Usually,...Compartir:
Study of SRB adherence on carbon steel by electrochemical and microscopic techniques Fecha: 2017-01-01Tipo de documento: ResumenResumen:It is well known that microbiologically influenced corrosion (MIC) is a serious issue in the oil and gas industry. This process is caused by a mixture of microorganisms, including aerobic and anaerobic bacteria. Among the later, the Sulfate Reducing Bacteria (SRB) are often designated as the pricipa...Compartir:
Modificación del color en pinturas aditivadas con plata Fecha: 2017-01-01Tipo de documento: ResumenResumen:Las pinturas aplicadas sobre diferentes sustratos pueden verse afectadas por el biodeterioro debido al crecimiento de hongos sobre la superficie. Las pinturas higiénicas son aquellas que se formulan con aditivos antimicrobianos. Entre estos aditivos, los más estudiados son los compuestos de plata:...Compartir:
Actividad antibacteriana y alguicida de compuestos de origen natural Fecha: 2016-01-01Tipo de documento: ResumenResumen:Las pinturas usadas en fachadas suelen sufrir biodeterioro por microorganismos. Las plantas sintetizan metabolitos secundarios que podrían constituir una alternativa sustentable a los biocidas tradicionalmente empleados para combatirlos. El objetivo del trabajo fue evaluar la actividad antibacteria...Compartir:
Síntesis y caracterización electroquímica de “tanato” de lantano Fecha: 2016-01-01Tipo de documento: ResumenResumen:El objetivo del presente trabajo fue el de obtener dos tipos de “tanato” de lantano, de baja solubilidad, a fin de que puedan ser incorporados como inhibidores de la corrosión en recubrimientos protectores temporarios, aquellos que protegen al metal durante su traslado y almacenamiento. The ai...Compartir:
Evaluación del uso de extractos vegetales acuosos como aditivos antifúngicos para pinturas Fecha: 2015-01-01Tipo de documento: ResumenResumen:El crecimiento de biopelículas en las superficies de los interiores edilicios resulta una amenaza desde el punto de vista ambiental para los individuos debido a la formación de bioaerosoles. Uno de los caminos para enfrentar esta problemática es el desarrollo de nuevos recubrimientos antimicrobia...Compartir:
Adherencia de bacterias a superficies recubiertas con grafeno Autores:Viera, Marisa Rastelli, Silvia Elena Dalfovo, María Celeste Ibáñez, Francisco Javier Gómez de Saravia, Sandra Gabriela Fecha: 2015-01-01Tipo de documento: ResumenResumen:La adherencia de microorganismos sobre diferentes materiales y del desarrollo de "biofilms" generan problemas de biocorrosión y biodeterioro de materiales, afectando el normal funcionamiento de sistemas de distribución de agua, equipamiento industrial o dispositivos biomédicos, entre otros.Difer...Compartir:
Influencia de la técnica de extracción de ADN en el análisis de poblaciones bacterianas en plantas de almacenamiento de petróleo Fecha: 2015-01-01Tipo de documento: ResumenResumen:El almacenamiento es un elemento de gran valor en la explotación de los servicios de hidrocarburos debido a que actúa como un pulmón entre producción y transporte para absorber las variaciones de consumo; permite la sedimentación de agua y barros del crudo antes de despacharlo por oleoducto o a...Compartir:
Evaluación del efecto antimicrobiano de timol, guayacol, eugenol y anisol sobre diferentes cepas bacterianas Fecha: 2015-01-01Tipo de documento: ResumenResumen:La adherencia de microorganismos sobre la superficie de diferentes materiales y el posterior desarrollo de biofilms puede ocasionar problemas tan diversos como biocorrosión, pérdida de rendimiento de equipos, biodeterioro de productos y materiales de importancia patrimonial....Compartir:
Microscopía láser confocal aplicada al estudio temporal y espacial de biofilms desarrollados sobre diferentes sustratos Fecha: 2012-01-01Tipo de documento: ResumenResumen:Los microorganismos presentes en los ambientes acuáticos tienden a fijarse y crecer sobre variadas superficies constituyendo comunidades complejas, multicelulares y tridimensionales denominadas biopelículas. Un componente importante que mantiene la integridad estructural de la biopelícula es el m...Compartir:
Analysis of arsenic influence of planktonic and sessile bacterial comunities from drinking water Fecha: 2012-01-01Tipo de documento: ResumenResumen:Several microorganisms growing in aquatic environments are able to adhere, multiply and development on solid surfaces in interacting and organized, 3D structures name bioflims. Many problems in drinking water network, such as corrosion, obstruction, increased resistance to biocides or contaminants a...Compartir: