摘要
在离子液体中对纤维素进行均相丙烯酰化,得到一定取代度的纤维素丙烯酸酯。利用纤维素中引入的双键与聚乙二醇单甲醚丙烯酸酯(PEGA)进行共聚,得到一种具有温敏性的凝胶。利用固体核磁共振^(13)C定量交叉极化/魔角旋转(QCP/MAS)对凝胶结构进行表征,通过紫外-可见分光光度计(UV-Vis)、差示扫描量热法(DSC)、平衡溶胀比测试(ESR)对产物的温敏性进行研究。结果表明,成功制备出具有温敏性的凝胶,其低临界溶解温度(LCST)约为65℃。
A series of cellulose acrylate with different degrees of substitution were obtained by the method of cellulose acryloylation in ionic liquid. The thermosensitive gel was obtained by the copolymerization of cellulose acrylate and PEGA via double-bonds introduced in the cellulose. The structure of gel was analyzed by solid state ~ZC quantitative cross polarization/magnetic angle spinning （QCP/MAS） NMR, and the thermosensitive performance of gel was verified by UV-vis spectrophotometer, differential scanning calorimetry （DSC） and equilibrium swelling ratio （ESR） test. The results show that the thermosensitive gel is successfully synthesized and the low critical solution temperature of the gel is about 65 ℃.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第8期10-13,共4页
China Plastics Industry
基金
国家自然科学基金(51273067/21544003)
关键词
纤维素
均匀酯化
温敏性凝胶
共聚反应
Cellulose
Homogeneous Esterification
Thermosensitive Gel
Copolymerization
