期刊
CARBOHYDRATE POLYMERS
卷 97, 期 1, 页码 98-104出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.04.082
关键词
Cellulose nanowhisker; Poly(2-ethyl-2-oxazoline); Cellulose nanowhisker-graft-polyethyleneimine; Biopolymer; Graft copolymerization
The cellulose nanocrystals, prepared by acid hydrolysis of cotton linter, consisted of slender rods with an average length of 173 nm and diameter of 80 nm, respectively. The surface of obtained cellulose nano crystals was chemically modified using tosyl chloride and then tosylated cellulose nanowhisker was used as macroinitiator for cationic ring opening graft polymerization of 2-ethyl-2-oxazoline monomer. The occurrence of chemical modification was evaluated by FTIR and H-1 NMR spectroscopies. Finally cellulose-g-POX was hydrolysed in acidic condition and therefore cellulose nanowhisker-g-PEI was prepared. X-ray diffraction measurements showed that the initial crystalline structure of CNW (Type I-beta,) was changed during graft polymerization and grafted POX in the surface of CNW was in amorphous form and DLS measurements showed that the hydrodynamic dimension of the resulted product is about 135 nm. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据