Fluorinated additives for stain-resistant matt latex paints / J. Branquinho in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009) . - p. 483-491 Titre : Fluorinated additives for stain-resistant matt latex paints Type de document : texte imprimé Auteurs : J. Branquinho, Auteur ; J. A. C. Alves, Auteur ; Susana Carvalho, Auteur ; Jorge Moniz, Auteur ; Fernanda Oliveira, Auteur ; M. H. Gil, Auteur Année de publication : 2009 Article en page(s) : p. 483-491 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Fluoropolymères Latex Polyacrylate de butyle Résistance aux taches Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Latex paints are often preferred over solvent-based paints due to their good gloss and color retention, ease of handling, and lower volatile organic contents. However, matt latex paints tend to show poor stain resistance since they develop highly porous and rough surfaces. In recent years, matt latex paints have been improved in their stain resistance with resulting better cleanability, by adding hydrocarbon acrylic polymers and fluorine-containing compounds. In this work, we prepared fluorinated acrylic emulsions of the copolymer of butyl acrylate (BA) and perfluorobutylethylene (PFBE), which were introduced in latex paint compositions. The properties of the modified paints were evaluated by performing stain resistance tests with several domestic products. It was observed that they had good stain release properties, thus conferring good properties to the final painting system. They contain the self-cleaning behavior typical of fluorinated coatings, which have been proven by the decrease of their surface energies. Since the cleaning procedures of a matt paint film can also impart some gloss increase, the wet and dry burnishes were also evaluated. The results have shown improvements in stain resistance and cleanability of the modified matt latex paints with the maintenance of their stability and the coatings gloss as required. DOI : 10.1007/s11998-009-9170-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9170-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7691 [article]

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Improving polymeric surfaces for biomedical applications : a review / P. Ferreira in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 3 (05/2015) . - p. 463-475 Titre : Improving polymeric surfaces for biomedical applications : a review Type de document : texte imprimé Auteurs : P. Ferreira, Auteur ; P. Alves, Auteur ; P. Coimbra, Auteur ; M. H. Gil, Auteur Année de publication : 2015 Article en page(s) : p. 463-475 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biomatériaux Couches minces multicouches Polyélectrolytes Polymères en médecine Rayonnement ultraviolet Technique des plasmas Traitement par irradiation Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : The performance of a material in a biological environment is mediated by its surface properties and by the combination of physical and mechanical properties that are required for a specific application. The more relevant surface properties in these respects include its chemical structure (hydrophilicity and the presence of functional groups that could initiate reactions in biological systems) and the morphology (the distribution and abundance of hydrophilic/hydrophobic phases, crystalline/amorphous phases and surface topographical assets). In surface modification, one aims to tailor the surface characteristics of a material toward a specific application without detrimentally affecting the bulk properties. This strategy allows for an increase in the success of implants’ application by increasing their lifetime. In this review, several approaches to the surface modification of polymers are described, as are a number of viable applications. Note de contenu : - INTERACTION OF SURFACES WITH BIOLOGICAL SYSTEMS : Blood-material interactions - Cell adhesion - Bacterial adhesion and biofilm formation - SURFACE MODIFICATION : Surface modification by ultraviolet irradiation - Surface modification by plasma treatment - Biomolecule attachment - Surface coating by polyelectrolyte multilayer (PEMs) thin films DOI : 10.1007/s11998-015-9658-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9658-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24171 [article]

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Surface modification of polymers for biomedical applications / P. Alves in SURFACE COATINGS INTERNATIONAL, Vol. 96, 3 (06/2013)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 96, 3 (06/2013) . - p. 140-147 Titre : Surface modification of polymers for biomedical applications Type de document : texte imprimé Auteurs : P. Alves, Auteur ; P. Ferreira, Auteur ; M. H. Gil, Auteur Année de publication : 2013 Article en page(s) : p. 140-147 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux Cellules -- Adhésivité Greffage (chimie) Implants médicaux Polymères en médecine Polymérisation sous plasma Rayonnement ultraviolet Technique des plasmas Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : A large number of different materials are used in a wide range of biomedical applications for which biocompatibility is essential. In order to combine this with the desired bulk structural properties, it is frequently desirable to apply some form of coating or other surface modification. Factors involved in the interactions between the body and implants are discussed. The process of cell attachment to surfaces is complex and takes place in several stages. Depending on the application, this attachment may be essential or highly undesirable. Surface modification may be based on physical methods such as flame treatment, corona discharge, UV radiation exposure or laser ablation. Chemical methods include etching, surface oxidation, hydrolysis, chemical grafting and surface coating. Various aspects and applications of these technologies are considered. Surface modification is a very important aspect of the creation of medically viable polymeric and non-polymeric biomaterials and thus the use of coating techniques in the creation of biomaterials has been growing over recent decades as they can improve the application properties of materials in end uses ranging from catheters to endoprostheses and cardiac valves. Note de contenu : - FACTORS AFFECTING THE CHOICE OF MATERIALS - SURFACES AND CELL ADHESION : Protein adhesion initiates cell adhesion - Biofilm formation - ENHANCING BIOCOMPATIBILITY : Surface modifications - Surface modification by ultraviolet radiation - Surface modification by plasma treatment (How plasma treatment functions - Plasma grafting/coating - Plasma polymerisation) - BIOMOLECULE ATTACHMENT En ligne : https://drive.google.com/file/d/14oh6CdCeysdOCtV9FQvafHH5phQo-D4g/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18716 [article]

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