Homogeneous Transesterification of Sugar Cane Bagasse toward Sustainable Plastics

被引:47
作者
Chen, Ming-Jie [1 ,2 ]
Li, Rui-Min [1 ]
Zhang, Xue-Qin [2 ]
Feng, Jing [1 ]
Feng, Jin [1 ]
Liu, Chuan-Fu [2 ]
Shi, Qing-Shan [1 ]
机构
[1] Guangdong Inst Microbiol, State Key Lab Appl Microbiol Southern China, Guangdong Prov Key Lab Microbial Culture Collect, Bldg 58,100 Cent Xianlie Rd, Guangzhou 510070, Guangdong, Peoples R China
[2] South China Univ Technol, State Key Lab Pulp & Paper Engn, 381 Wushan Rd, Guangzhou 510640, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Biomass; Ionic liquid; Bioplastics; Biobased materials; Chemical modification; IONIC LIQUIDS; LIGNOCELLULOSIC BIOMASS; ACETIC-ANHYDRIDE; VINYL-ACETATE; SIDE REACTION; CELLULOSE; WOOD; ACETYLATION; ESTERS; ROUTE;
D O I
10.1021/acssuschemeng.6b01735
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Homogeneous esterification of lignocellulosic agro-forestry wastes is an efficient approach to transform the biomass into value-added biobased materials. However, the application of fatty acid anhydrides or aryl chlorides as esterified reagents would yield equivalent acids which lead to significant decomposition of lignocellulosic biomass. The present study proposed an alternative chemical approach to prepare bioplastics from lignicellulosic biomass. Sugar cane bagasse esters were prepared by transesterification with vinyl esters using 1-ethyl-3-methylimidazolium acetate as duel solvent and activator. Solution-stated NMR studies suggested that the polysacchirides were highly reactive during the homogeneous transesterification. The chemical mechanism of the transesterification was demonstrated to be a carbene mechanism, which subsequently transferred into the intermediate of 2-alkanoyl-dialkylimidazolium. The as-prepared sugar cane bagasse esters were found to be solvable in common solvents. Bioplastic films were prepared by solution casting. Scanning electron microscopy and tensile testing studies showed that the sugar cane bagasse ester films were comparable to those of cellulose fatty esters.
引用
收藏
页码:360 / 366
页数:7
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