Surface modification of cellulosic fibres for multi-purpose TiO2 based nanocomposites

authors	Goncalves, G; Marques, PAAP; Pinto, RJB; Trindade, T; Neto, CP
nationality	International
journal	COMPOSITES SCIENCE AND TECHNOLOGY
author keywords	Nano composites; Functional composites; Surface treatments; Surface treatments; Cellulose fibres
keywords	COLLOIDAL TIO2; PARTICLES; HYDROLYSIS; ADSORPTION; TITANIUM; SILANES
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 Si-29 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. (C) 2009 Elsevier Ltd. All rights reserved.
publisher	ELSEVIER SCI LTD
issn	0266-3538
year published	2009
volume	69
issue	7-8
beginning page	1051
ending page	1056
digital object identifier (doi)	10.1016/j.compscitech.2009.01.020
web of science category	Materials Science, Composites
subject category	Materials Science
unique article identifier	WOS:000266380700023