中文摘要：

采用氮氧稳定自由基聚合制备了苯乙烯和4-乙烯吡啶嵌段共聚物（PS-b-P4VP），聚合物的分子量及其分布以及结构分别用凝胶渗透色谱（GPC）和核磁（1^H—NMR）进行了表征。并用原子力显微镜（AFM）对PS-b-P4VP增容PS／P4VP效果进行了研究。结果表明，在氮氧稳定自由基（HTEMPO）存在下，用过氧化苯甲酰（BPO）引发苯乙烯聚合，所制备聚苯乙烯的分子量分布在1．15～1．25范围；将该聚苯乙烯溶于4-乙烯吡啶可以继续引发4-乙烯吡啶的聚合反应，共聚物的分子量分布在1．12～1．30范围。1^H—NMR说明共聚物为嵌段共聚物。AFM结果说明所合成的嵌段共聚物PS—b—P4VP是PS与P4-VP的良好增溶剂。

英文摘要：

In this paper, a series of polystyrene and polystyrene-block-poly （4-vinylpyridine） （PS-b-P4VP） were synthesized by using Living free radical polymerization initiated by Benzoyl Peroxide （BPO） in the presence of 4-hydroxyl-2,2,6,6-tetramethylpiperridine-oxyl-1 （HTEMPO · ）. Experimental results show that the polymerization of styrene has ‘Living＇ nature, the polydispersity of synthesized polystyrene is in the range of 1.15 to 1.25. The polystyrene with ‘Living＇ ends can initiate the living free radical polymerization of 4-Vinylpyr-idine in the presence of 4-hydroxyl-2, 2, 6, 6-tetramethylpiperridine-oxyl 1 to sequentially form the polystyrene-block- poly（4-vinylpyridine） with polydispersity in the range of 1.12 to 1.30. The structure of diblock was determined by 1^H-NMR. The diblock polymerization（PS-b-P4VP）is good compatibiliers for PS and P4VP.