含亲水性丙烯酸酯单体的微乳液聚合研究

在构建含亲水丙烯酸酯单体微乳液聚合体系的基础上,描绘了微乳液体系的拟三元相图,考察了乳化剂和助乳化剂类型对微乳液相行为的影响,并进行了该体系正相微乳液聚合。结果表明正戊醇、环己醇、乙醇等作为助乳化剂协同阴离子乳化剂十二烷基硫酸钠(SDS)可以形成稳定的单相微乳液,但是这些微乳液体系在聚合过程中很容易生成凝胶;环己烷作为助乳化剂虽然在配制过程中不能形成稳定的透明或半透明体系,但是在反应过程中则比较稳定,能形成半透明状的聚合物微乳液;阴离子乳化剂与其它非离子乳化剂组合以及单独使用非离子乳化剂均难以制备稳定的微乳液。

The research of microemulsion polymerization containing hydrophilic monomers

On the base of constructing acrylate microemulsion system containing hydrophilic monomer hydroxylethyl methacrylate, the pseudo-ternary phase diagram of the system was figured out, the effect of emulsifier and co-emulsifier type on microemulsion polymerization was investigated. The results showed that the system composed of n-pentranol, ethyl alcohol and cyclohexaline as co-emulsifier with sodium dodecyl sulfonate (SDS) as emulsifier could produce stable single-phase microemulsion, but the system easily generated gelatin in the reaction; however, while the system composed of cyclohexane as co-emulsifier with SDS as emulsifier could not produce transparent or semi-transparent system before the reaction, but it could develop semi-transparent microemulsion in the end.