采用种子乳液聚合法合成出乳化剂质量分数小于1.5%,聚合物质量分数大于50%,粒径为35.6 nm,多分散性(PDI)为0.133的丙烯酸酯微乳液[1].本文用框图的方式,阐述了改进的普通乳液聚合法合成乳化剂用量少、固含量高的纯丙纳米乳液的机理.用普通乳液聚合工艺、胶柬成核机理,同样可以合成出性能优异的微乳液;种子聚合阶段,采用全滴加法可使形成胶束数目增加,成核率提高,反应结束体系中空胶束数目尽可能减少;外层单体加入阶段,要控制补加乳化剂的量使体系中乳化剂浓度在临界胶束浓度以下.
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