封面图片
2019年, 第13卷 第1期
(Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu, pp. 630-642)
Lignin is one of the most abundant biomass resources and it makes up 20 wt-%‒30 wt-% of lignocellulose. It endows plants with their natural toughness and UV resistance. The pulp and paper pulping industry generates more than 50 million tons of technical lignin annually. However, most of the technical lignin is not properly utilized. Lignin is renewable, biodegradable, non-toxic, inexpensive and widely available, so the efficient and comprehensive utilization of lignin is of great significance to sustainable chemical industry. For the first time, a simple and effective sol-gel method has been developed for the preparation of lignin/TiO2 nanocomposites in an aqueous medium. The as-prepared lignin/TiO2 nanocomposites contain well-dispersed small particles with excellent UV shielding ability and good compatibility with waterborne polyurethane (WPU). When the lignin/TiO2 nanocomposites were blended with WPU, the tensile ductility, the UV absorbance and anti-UV aging performance of the WPU films increased significantly. This work highlights new possibilities for the utilization of alkali lignin.
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ISSN 2095-0179 (Print)
ISSN 2095-0187 (Online)
CN 11-5981/TQ
Postal Subscription Code 80-969 Formerly Known as Frontiers of Chemical Science and Engineering in China 2018 Impact Factor: 2.809