以甲基丙烯酸-2-羟乙酯(HEMA)和聚甲基氢硅氧烷(PMHS)为原料,合成了甲基丙烯酸乙氧基聚甲基氢硅氧烷醚(MEPMHSE).以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)为主单体,加入合成的硅单体MEPMHSE作为聚丙烯酸酯改性剂进行核壳乳液共聚合,制得平均粒径为135.2 nm,粒径分布窄(PDI=0.045)的有机硅改性的具有核壳结构的聚丙烯酸酯乳液.采用FTIR、1H NMR对MEPMHSE进行表征,并使用TEM、DSC以及Zeta电位及纳米激光粒径分析仪来表征乳胶粒子的结构与粒径.研究乳化剂的配比、含量以及MEPMHSE的加入量对乳液稳定性、吸水率、凝胶量以及乳液胶膜疏水性的影响.研究结果表明:用MEPMHSE改性的丙烯酸酯乳液胶膜的疏水性得到较大的提高,MEPMHSE添加量为6％时,所得丙烯酸酯乳液胶膜对水的接触角由空白对照样的65°提高到98°.
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