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Title: Surface modification of cellulosic fibres for multi-purpose TiO(2) based nanocomposites
Author: Goncalves, Gil
Marques, Paula A. A. P.
Pinto, Ricardo J. B.
Trindade, Tito
Pascoal Neto, Carlos
Keywords: A. Nano composites
A. Functional composites
B. Surface treatments
E. Surface treatments
Cellulose fibres
Issue Date: Jun-2009
Abstract: Vegetable cellulose fibres have been surface modified using the hydrolysis of tetraethoxysilane (TEOS), octyltrimethoxysilane (OTMS) or phenyltrimethoxysilane (PTMS), followed by the layer-by-layer deposition of previously synthesized TiO2 nanoparticles. Raman, FTIR and 29Si Solid State NMR spectroscopies, and SEM were used to characterize the resulting nanocomposites. Water contact angle measurements were performed and the results indicate a quite distinct behaviour depending on the employed surface modification procedure. We anticipate that some of the cellulose-based composite materials have potential to be used in self-cleaning surfaces and reinforcing agents in polymer matrices, namely due to their hydrophobic surface and photostability when exposed to solar radiation.
Peer review: yes
DOI: 10.1016/j.compscitech.2009.01.020
ISSN: 0266-3538
Appears in Collections:DQ - Artigos

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