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通过苯乙烯与聚二甲基硅氧烷大单体进行自由基聚合反应 ,合成了梳状聚苯乙烯 -聚二甲基硅氧烷共聚物。结果表明 ,侧链聚二甲基硅氧烷的相对分子质量越大 ,梳状聚苯乙烯 -聚二甲基硅氧烷共聚物的相分离程度越明显 ,其热稳定性与聚苯乙烯相比有一定程度的提高
Through the free radical polymerization of styrene and polydimethylsiloxane macromonomer, a comb-like polystyrene-polydimethylsiloxane copolymer was synthesized. The results showed that the larger the relative molecular mass of the side chain polydimethylsiloxane, the more obvious the phase separation of the comb-shaped polystyrene-polydimethylsiloxane copolymer was. The thermal stability of the comb-shaped polystyrene- Than a certain degree of improvement