摘要
以丁基锂为引发剂、四氢呋喃为溶剂 ,在氮气气氛和 - 78℃下进行苯乙烯 (ST)阴离子聚合 ,并加入 3 溴噻吩作为终止剂 ,从而合成出末端含噻吩基的聚苯乙烯 (PST Thp) ,它可以进行氧化偶联聚合 ,是一类新的大分子单体 .在无水三氯化铁作用下 ,PST Thp可以进行均聚反应或与噻吩进行共聚反应 ,共聚反应生成主链刚性、支链分子量分布窄的聚 (噻吩 接枝 苯乙烯 ) (PThp g ST) ,凝胶渗透色谱。
A novel macromonomer, polystyrene capped with thienyl group (PST-Thp), which can undergos oxidation coupling polymerization, has been synthesized by anionic polymerization of styrene with butyl lithium as the initiator and 3-bromo-thiophene as the terminator. Its homopolymerization and copolymerization with thiophene in the presence of anhydrous ferric chloride produced poly(thiophene-g-styrene) (PThp-g-ST) and were studied by GPC, FTIR and UV-Vis spectroscopy. The homopolymerization just gave out polymacromonomer with very low polymerization degree. Copolymerization of PST-Thp with thiophene produced graft copolymer with conjugated main chain of polythiophene and narrowly-distributed branch chain of PST. Copolymerization conversion of PST-Thp and the fraction of the soluble of PThp-g-ST increase with molecular weight of PST-Thp.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2002年第5期587-591,共5页
Acta Polymerica Sinica
基金
国家自然科学基金资助项目 (基金号 2 0 10 40 0 6)
