【摘要】 以仲丁基锂为引发剂,引发异戊二烯本体负离子聚合,再用环氧丙烷甲醇终止法合成了端羟基聚异戊二烯;然后利用端羟基聚异戊二烯的活性端羟基,引发丙交酯的开环聚合制备了聚乳酸聚异戊二烯共聚物,并采用IR、1HNMR、TG等测试手段对产品进行了表征。结果表明,通过改变仲丁基锂及环氧丙烷的用量,可合成相对分子质量及羟基含量可控的且1,4结构质量分数超过87.5%的端羟基聚异戊二烯。更多还原

【Abstract】 Hydroxyl-terminated polyisoprene was synthesized by anionic polymerization.It was initiated by sec-butyllithium and terminated by propyleneoxide and methanol.Initiated by the active hydroxyl group of hydroxyl-terminated polyisoprenes,polylactide-polyisoprene copolymer was prepared by ring-opening polymerization.The products were characterized by IR,1H-NMR,TG.The results showed that the molecular weight and hydroxyl group content of polyisoprene could be controlled by varying the quantity of sec-butyllithium and propyleneoxide.And the mass percentage of 1,4-structure excesses 87.5% in the final hydroxyl-terminated polyisoprene.更多还原