Superhydrophobic cellulose nanocomposites

resumo

Superhydrophobic cellulose nanocomposites were prepared using a multi-step nanoengineering process. The combination of different techniques made it possible to construct novel features at the ensuing surface, characterized by both an increase in its roughness induced by amorphous silica particles and a reduction in its energy insured by perfluoro moieties, giving rise to water contact angles approaching 150 degrees. The modification calls upon an aqueous LbL system followed by siloxane hydrolysis, both conducted at room temperature in air. Each modification was followed by scanning electron microscopy (SEM) and atomic force microscope (AFM). These original cellulose-silica-silane composite materials open the way to further valorisations of a ubiquitous renewable resource in applications such as water repellence and self-cleaning. (c) 2008 Elsevier Inc. All rights reserved.

palavras-chave

SUPER-HYDROPHOBIC SURFACES; FIBERS; FILMS; POLYELECTROLYTES; FABRICATION; MULTILAYER; GROWTH

categoria

Chemistry

autores

Goncalves, G; Marques, PAAP; Trindade, T; Neto, CP; Gandini, A

nossos autores

Partilhe este projeto

Publicações similares

Usamos cookies para atividades de marketing e para lhe oferecer uma melhor experiência de navegação. Ao clicar em “Aceitar Cookies” você concorda com nossa política de cookies. Leia sobre como usamos cookies clicando em "Política de Privacidade e Cookies".