Preparation of highly hydrophobic and lipophobic cellulose fibers by a straightforward gas-solid reaction
authors Cunha, AG; Freire, C; Silvestre, A; Neto, CP; Gandini, A; Belgacem, MN; Chaussy, D; Beneventi, D
nationality International
journal JOURNAL OF COLLOID AND INTERFACE SCIENCE
author keywords Cellulose fibers; Trichloromethylsilane; Gas-solid reaction; Hydrophobicity; Lipophobicity; Green process
keywords SUPERHYDROPHOBIC CELLULOSE; SURFACES; SILICON
abstract This work describes a very simple, rapid, and efficient approach to the hydrophobization and lipophobization of cellulose fibers through their reaction with gaseous trichloromethylsilane (TCMS). The characterization of the modified surface involved FTIR-ATR and solid-state (29)Si NMR spectroscopy, scanning electron microscopy (SEM), and contact angle measurements with different liquids. The modification generated an inorganic coating around the fibers, associated with the construction of a three-dimensional network of Si-O-Si bridges partly bound to the polysaccharide macromolecules. This coating conferred both a high hydrophobicity and a lipophobicity to the samples even when the treatments applied modest TCMS quantities and reaction times as short as 30 s. The green connotation of this novel process constitutes an additional positive feature. (C) 2010 Elsevier Inc. All rights reserved.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 0021-9797
year published 2010
volume 344
issue 2
beginning page 588
ending page 595
digital object identifier (doi) 10.1016/j.jcis.2009.12.057
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000275799100049
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journal impact factor 7.489
5 year journal impact factor 6.171
category normalized journal impact factor percentile 80.818
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