%0 Journal Article
%T Preparation and Characterization of Lignocellulosic Oil Sorbent by Hydrothermal Treatment of Populus Fiber
%A Yue Zhang
%A Sheng Yang
%A Jian-Quan Wu
%A Tong-Qi Yuan
%A Run-Cang Sun
%J Materials
%P 6733-6747
%D 2014
%I MDPI AG
%R 10.3390/ma7096733
%X This study is aimed at achieving the optimum conditions of hydrothermal treatment and acetylation of Populus fiber to improve its oil sorption capacity (OSC) in an oil-water mixture. The characteristics of the hydrolyzed and acetylated fibers were comparatively investigated by FT-IR, CP-MAS 13C-NMR, SEM and TGA. The optimum conditions of the hydrothermal treatment and acetylation were obtained at170 ˇăC for 1 h and 120 ˇăC for 2 h, respectively. The maximum OSC of the hydrolyzed fiber (16.78 g/g) was slightly lower than that of the acetylated fiber (21.57 g/g), but they were both higher than the maximum OSC of the unmodified fiber (3.94 g/g). In addition, acetylation after hydrothermal treatment for the Populus fiber was unnecessary as the increment of the maximum OSC was only 3.53 g/g. The hydrolyzed and the acetylated Populus fibers both displayed a lumen orifice enabling a high oil entrapment. The thermal stability of the modified fibers was shown to be increased in comparison with that of the raw fiber. The hydrothermal treatment offers a new approach to prepare lignocellulosic oil sorbent.
%K oil sorbent
%K hydrothermal treatment
%K Populus fiber
%K acetylation
%U http://www.mdpi.com/1996-1944/7/9/6733