以聚(甲基丙烯酸丁酯/丙烯酸钠)[ P(BMA/AANa)]低聚物为乳化剂,合成了无皂聚(α-甲基苯乙烯/甲基丙烯酸丁酯)P(AMS/BMA)乳液,考察了P(BMA/AANa)用量、AMS和BMA配比对无皂乳液电解质稳定性、冻融稳定性和高温稳定性以及成膜耐水性的影响.当P(BMA/AANa) 37％(质量分数,下同),AMS和BMA总量18.5％,m(AMS)∶ m(BMA)=1.0∶1.5,(NH4)2S2O8 0.3％,反应温度70～75℃,反应时间3h时,合成乳液冻融指数为5,60 ℃下保温120 h无变化,涂膜剥落或起皱的时间为67 h,w[ P(AMS/BMA)]=0.1％的乳液加入c(KCl) =0～2.5 mol/L的氯化钾水溶液中,透光度为41％-42％,表明乳液具有较好的性能.
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