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以α-甲基丙烯酸-3-巯基己酯(MHM)为链转移剂单体,过硫酸钾(PPDS)为引发剂,十二烷基苯磺酸钠(LAS)为乳化剂,通过乳液聚合合成支化聚苯乙烯。采用核磁共振氢谱(1H-NMR)和三检测体积排除色谱(TD-SEC)对支化聚苯乙烯进行了表征分析。结果表明:乳液聚合可以合成较窄分子量分布的高分子量支化聚苯乙烯(Mw.MALLS=2.18×106g?mol?1,PDI=4.42),且表现出很高的支化程度。
Using α-mercaptohexyl methacrylate (MHM) as chain transfer monomer, potassium persulfate (PPDS) as initiator and sodium dodecyl benzene sulfonate (LAS) as emulsifier, Synthetic branched polystyrene. The branched polystyrene was characterized by 1H nuclear magnetic resonance (1H-NMR) and three-detection-volume exclusion chromatography (TD-SEC). The results showed that the high molecular weight branched polystyrene (Mw.MALLS = 2.18 × 106g? Mol? 1, PDI = 4.42) could be synthesized by emulsion polymerization and showed high branching degree.