HOMOGENEOUS SYNTHESIS OF CROSSLINKED CELLULOSE SPHERES FROM HEMP (CANNABIS SATIVA L.) STEM AND COTTON

被引：0
|
作者：
Yang, Ru [1 ]
Wang, Yong [1 ]
Li, Min [1 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
CELLULOSE CHEMISTRY AND TECHNOLOGY | 2014年 / 48卷 / 5-6期
关键词：
cellulose spheres; hexamethylene diisocyanate; crosslinking; NMMO; CHEMICAL-MODIFICATION; IONIC LIQUID; BACTERIAL CELLULOSE; MICROSPHERES; CHLORIDE; FIBERS;
D O I：
暂无
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
Cellulose, extracted from hemp (Cannabis sativa L.) stems, was successfully crosslinked with hexamethylene diisocyanate through the homogeneous reaction in the solvent N-methylmorpholine-N-oxide (NMMO). Cotton was also used due to its high cellulose content. The cellulose spheres, about 1 pm in diameter, were obtained through chemical cross-linking reaction. Fourier transform infrared spectroscopy (FTIR) showed that the carbonyl group, NH-group and urethane were introduced. Thermogravimetry (TG) indicated that the crosslinked products had better heat resistance than native cellulose. It was found that the adhesion phenomenon appeared with the increasing amount of cotton cellulose. A possible model of formation of the crosslinked cellulose spheres was also proposed in this paper.
引用
收藏
页码：455 / 459
页数：5
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