天津工业大学学报2017，Vol.36Issue(2)：20-24,30,6.DOI:10.3969/j.issn.1671-024x.2017.02.004
反应介质对醋酸纤维素萘甲酰化及其产物性能的影响
Effect of reaction medium on naphthenylation of cellulose acetate and its product properties
摘要
Abstract
In order to investigate the effect of reaction medium on the naphthenylation of cellulose acetate , cellulose diac-etate (DS=2.45) was partly deacetylated by acid-catalyzed hydrolysis to cellulose acetate (DS=2.01) and then reacted with 1-naphthoyl chloride (NpCl) to homogeneously synthesize cellulose acetate naphthoate (CANp) in N, N-dimethylacetamide (DMAc) and pyridine, respectively. FTIR and NMR were used to characterize the chemical structure of CANp. Meanwhile, the crystallization behavior, thermal and anti-ultraviolet properties of CANp were studied through X-ray diffraction, DSC and UV-Vis. The results showed that the degree of substitu-tion of naphthoate moiety (DSCANp) of CANp with DMAc as solvent was 0.52, the substitution order was C6>C2>C3, and the DSCANp of CANp with pyridine as solvent was 0.98, the substitution order was C2>C6>C3. The differ-ent chemical structures had little effect on the crystallization behavior and thermal property except for the anti-ultraviolet property of CANp. And the absorbance of UV-Vis was up to 2.67 when CANp was prepared in pyri-dine, which was higher than that in DMAc. Therefore, the reaction with pyridine as solvent was superior to that with DMAc.关键词
醋酸纤维素/萘酰基取代/反应介质/结构与性能Key words
cellulose acetate/substitution of naphthoate moiety/reaction medium/structure and property分类
化学化工引用本文复制引用
宋俊,刘美,杨占平,程博闻,许松伟..反应介质对醋酸纤维素萘甲酰化及其产物性能的影响[J].天津工业大学学报,2017,36(2):20-24,30,6.基金项目
天津市自然科学基金资助项目(14JCQNJC03600) （14JCQNJC03600）
企业合作项目(R-CNC162017) （R-CNC162017）
