Elaboration of thin colloidal silica films with controlled thickness and wettability

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TitreElaboration of thin colloidal silica films with controlled thickness and wettability
Type de publicationJournal Article
Year of Publication2016
AuteursViau L, Vrlinic T, Jurin FE, Lakard B
JournalCOMPTES RENDUS CHIMIE
Volume19
Pagination665-673
Date PublishedMAY
Type of ArticleArticle
ISSN1631-0748
Mots-cléscomposite films, Physico-chemical characterization, Polymers, Self-assembly, Silica nanoparticles
Résumé

Silica films with controlled thickness and wettability have been formed by sequential adsorption of colloidal silica nanoparticles and a cationic polyelectrolyte (poly(allylamine hydrochloride) or poly(diallyldimethylammonium chloride)) was used as the binding agent. Whatever be the conditions used, the structure of films appeared dense and nonporous. Thicknesses varying from 12 to 430 nm and wettability varying from 5 to 60 degrees were obtained when the pH or concentration of the silica solution was varied. Quartz crystal microbalance measurements evidenced the formation of regular and reproducible thin films mainly composed of silica nanoparticles. These films contained few polycations due to the formation of long-distance charge pairs between silica nanoparticles and polycations. (C) 2016 Academie des sciences. Published by Elsevier Masson SAS. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

DOI10.1016/j.crci.2016.01.007