苯乙烯-2-乙烯基吡啶两嵌段共聚物的合成与表征

SYNTHESIS AND CHARACTERIZATION OF BLOCK COPOLYMERS OF STYRENE AND 2 VINYLPYRIDINE

采用阴离子聚合技术合成了一系列苯乙烯２乙烯基吡啶的两嵌段共聚物（ＰＳｂＰ２ＶＰ），并采用ＧＰＣ、ＦＴＩＲ、ＮＭＲ（１ＨＮＭＲ和１３ＣＮＭＲ）、ＤＭＡ等手段进行了表征．结果表明，产物为高分子量、窄分布的两嵌段共聚物。

A series of diblock copolymers of styrene and 2 vinylpyridine have been synthesized successfully via sequential anionic polymerization.The results of GPC,FTIR,1H NMR and 13C NMR show that the products are diblock copolymers with high molecular weight 415×104 to 10 6×104 and narrow molecular weight distribution 1 19～1 66.The two phase structure of the copolymers is proved by the information obtained from DMA and DTA.