丙烯酸酯无皂核壳乳液聚合乳化剂的研究  

The emulsifier in the soap-free and core-shell emulsion polymerization of acrylate

作　　者：朱文君[1] 陈存华[1] 

机构地区：[1]华中师范大学化学学院,武汉430079

出　　处：《华中师范大学学报（自然科学版）》2015年第1期78-82,86,共6页Journal of Central China Normal University：Natural Sciences

基　　金：湖北省国际合作项目(20201264013)

摘　　要：乳液聚合常出现凝胶率过高、乳液粒径过大、分布过宽、乳液在配制涂料的过程中易破乳以及涂料最低成膜温度过高的问题.利用自制马来酸酯乳化剂便宜、无毒无污染、反应性好等特点,作为无皂乳液的反应性表面活性剂来解决上述问题.选用性质不同的乳化剂复配,得到的乳液成膜后对成膜能力、耐水、耐酸碱能力进行对比,确定复配和乳化能力更好的乳化剂,并通过粒径和电位等的测试来确定乳液的性能.最终得到马来酸酯乳化剂与OP复配的比例为1∶1,乳液的吸水率为8.27%,固含量为48.06%,凝胶率为8.16%,单体妆化率为98.01%.乳液的粒径控制为3.325dnm,PDI为0.233.The gel rate of the emulsion often appear too high,the size of latex particle is too large,and the distribution curve is too wide,the emulsion is easily demulsification in the preparation process of coating and the minimum film-forming temperature is too high.We used the cheap,the non-toxic,the pollution-free,reactive of maleate emulsifiers made by myself to be the soap-free emulsion reactive surfactant to solve the problem.Chosing the different characteristic of emulsifiers,then compound them to prepara the emulsion.After the preparation of film,contrast the ability of film-forming,water resistant,acid and alkali resistant to determine the better group.then through size and potential of the test,scanning electron microscopy test to determine the performance of the emulsion.The radio of the maleic acid ester emulsifier with the OP was 1∶1,the water absorption rate was 8.27%,the solid content of 48.06%,the gel rate was8.16%,the monomer makeup rate was 98.01%.The emulsion particle size was controlled at 3.325 dnm,PDI was 0.233.

关 键 词：马来酸酯乳化剂 无皂乳液 核壳乳液 

分 类 号：O632.5[理学—高分子化学]