RT Journal Article
T1 Surface Energy and Lewis Acid-base Characteristics of Lignocellulosic Fibers upon Modification by Chemical Vapor Deposition of Trichloromethylsilane: An Inverse Gas Chromatography Study: 												An Inverse Gas Chromatography Study
A1 Gamelas, J. A. F.
A1 Azpeitia, M.
A1 Ferreira, P. J.
A1 Tejado, A.
AB The surface of a thermomechanical pulp (TMP), containing 26 wt% of lignin, was modified by silanization with trichloromethylsilane (TCMS) via chemical vapor deposition, and thoroughly analyzed for its physicochemical properties by inverse gas chromatography (attenuated total reflection-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy being used as complementary tools). For a 2-min TCMS-treated TMP, a decrease of the dispersive component of the surface energy from 38 to 14 mJ m−2 (at 40°C), and, at the same time, an increase of the Lewis acidic and Lewis basic characters were found. The surface of this sample, modified in a high extent, was similar to that of a bleached kraft pulp (<0.1 wt% of lignin) subjected to the same silanization process, which is suggested as being due, in both cases, to the formation of a methyl-silica coating on the fiber’s surface. The new silanized fibers obtained from cheap TMP can be used for the production of a new generation of biocomposites with a variety of matrices.
SN 0277-3813
YR 2018
FD 2018-05-04
LA eng
NO Gamelas , J A F , Azpeitia , M , Ferreira , P J & Tejado , A 2018 , ' Surface Energy and Lewis Acid-base Characteristics of Lignocellulosic Fibers upon Modification by Chemical Vapor Deposition of Trichloromethylsilane: An Inverse Gas Chromatography Study : An Inverse Gas Chromatography Study ' , Journal of Wood Chemistry and Technology , vol. 38 , no. 3 , pp. 264-275 . https://doi.org/10.1080/02773813.2018.1454961
NO Publisher Copyright: © 2018, Copyright © Taylor & Francis Group, LLC.
DS TECNALIA Publications
RD 12 ago 2024