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研究了在不同条件下,α-P/α-MSt的阳离子共聚合反应。5种类型的阳离子引发体系的比较表明,复合引发剂AlCl_3/SbCl_3的性能最优,共聚产率高,软化点也较高。IR、NMR、TG等分析证明,它有效地使α-P与α-MSt进行共聚,获得组分不同的共聚低聚体。α-MSt与苯乙烯不同、它在聚合过程中对α-P聚合起活化剂作用、同时又有明显的链终止剂的作用,以它为端基的阳离子增长链倾向于与自身单体反应形成稳定低聚体使聚合终止。
The cationic copolymerization of α-P / α-MSt under different conditions was studied. The comparison of the five types of cationic initiator system shows that the composite initiator AlCl 3 / SbCl 3 has the best performance, high copolymerization yield and high softening point. IR, NMR, TG and other analysis proved that it effectively α-P and α-MSt copolymerization to obtain different components of the copolymer oligomer. Unlike styrene, α-MSt acts as an activator for α-P polymerization during polymerization and has an apparent chain-stopper effect. The α-MSt tends to react with its own monomer Form a stable oligomer to terminate the polymerization.