日用化学工业2012，Vol.42Issue(3)：167-171,191,6.
壳聚糖的光敏改性及其胶束化行为
Photosensitive modification of chitosan and its micellization behavior
摘要
Abstract
Mercapto - terminated graft polymer CTS - HS was synthesized through amidation reaction between chitosan and mercaptoacetic acid with combined catalytic action of 1 - (3 - dimethylaminopropyl) - 3 -ethylcarbodiimide hydrochloride (EDC) and N - hydroxy succinyl imide (NHS) at room temperature. The CTS -HS was complexed with a solubilizer PEG2 000 in aqueous solution and,after freeze - drying,formed CTS - HS/PEG complex. The complex CTS - HS/PEG was used as chain transfer agent and polymerized by free radical solution polymerization with methacrylyl oxyethyl cinamate ( CEMA) and polyethylene glycol methacrylate (MPEG) as inter -polymeric monomers as well as azodiisobutylonitrile (AIBN) as initiator. The final product was chitosan photosensitive graft copolymer CTS - g - P ( CEMA -co - MPEG). Chemical structure of the product was characterized by FTIR. The micelles properties and morphological structure of the product in water was studied by UV — Vis spectroscopy, zeta potential analyzer, nano — particle size analyzer and TEM. Emulsifying performance of the product was studied with white paraffin oil as oil phase. Results showed that the product CTS - g -P(CEMA -co - MPEG) displays photosensitivity and can absorb ultraviolet rays with wavelength range of about 275 nm. In aqueous solution, the product can self — assemble spherical micelles with particle size of about 120 nm and the micelles can be stable in a wide range of pH in water. Emulsifying performance of the product is quite good.关键词
壳聚糖/接枝/光敏性/胶束/乳化Key words
chitosan/ graft/ photosensitivity/ micelles/ emulsification分类
化学化工引用本文复制引用
林海芳,易成林,徐晶,葛韵,刘晓亚..壳聚糖的光敏改性及其胶束化行为[J].日用化学工业,2012,42(3):167-171,191,6.基金项目
江南大学自主科研计划资助项目(JUSRP21112) （JUSRP21112）
