聚乙烯基吡啶与聚环氧乙烷多嵌段共聚物增容剂的制备

Preparation on the Expanding Material of Multiblock Copolymers of Polyvinylpyridine and Polyoxyethylene

α-甲基萘锂作为引发剂利用阴离子聚合得到 2 乙烯基吡啶的遥爪双羟基低聚物 (P2VP) ,然后以二氯甲烷作偶联剂与聚环氧乙烷 (PEO)反应制备P2VP和PEO多嵌段共聚物 ,考察了反应时间对偶联反应的影响 ,并对共聚物进行了IR和1H NMR表征 ,由1H NMR谱的积分曲线得到了共聚物中PEO链段质量分数。

Telechelic dihydroxy poly(2 vinylpyridine)was synthesized by using lithium α methylnaphthalene as a anionic initiator. Then multiblock copolymers was obtained by condensing polyoxyethylene and poly(2 vinylpyridine)with dichloromethane in the presence of potassium hydroxide. The effect of reaction time was investigated. The copolymers were characterized by IR and 1 H NMR and the PEO segment content was calculated from the integral curve of 1 H NMR spectra.