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以异丙基苯钾(n-Cumyl potassium)作引发剂,α-甲基丙烯酰氯为终止剂,用阴离子聚合方法合成了一系列不同分子量、不同组成的新型聚(苯乙烯-环氧乙烷)(疏水-亲水型)嵌段大单体[Poly(St-b-Eo)-MA magromer]。用红外光谱及核磁共振进行了鉴定并测定了它的数均官能度(?)_n,对大单体与苯乙烯、甲基丙烯酸甲酯和甲基丙烯酸在不同条件下的共聚反应也进行了研究。发现反应条件对大单体和烯类单体的共聚速率均有很大影响。
A series of novel poly (styrene-ethylene oxide) copolymers with different molecular weight and different compositions were synthesized by anionic polymerization using n-Cumyl potassium as initiator and α-methacryloyl chloride as the terminator. ) (Hydrophobically-Hydrophilic) Block Macromonomer [Poly (St-b-Eo) -MA magromer]. The number average functionality (?) _ N was identified by IR and 1H NMR. Copolymerization of macromonomers with styrene, methyl methacrylate and methacrylic acid under different conditions was also carried out the study. It was found that the reaction conditions have a great influence on the copolymerization rate of macromonomers and vinyl monomers.