支化丙烯酸酯乳液的制备和性能  

Synthesis and Properties of Branched Polyacrylate Emulsion

作　　者：于洋[1,2] 李斌[1] 王鹏[1] 辛秀兰[1,2] 徐宝财[1,2] 吴涛[1] 禹晓燕 

机构地区：[1]北京工商大学,北京100048 [2]食品添加剂与配料北京高校工程研究中心,北京100048

出　　处：《包装工程》2016年第11期42-46,共5页Packaging Engineering

基　　金：国家自然科学基金(21376008);"十二五"国家科技支撑计划(2013BAC01B04);北京工商大学青年教师科研启动基金(QNJJ2015-13)

摘　　要：目的研究支化单体对丙烯酸酯乳液的影响。方法以顺丁烯二酸酐和季戊四醇为原料,通过酯化反应制备聚酯型四臂支化单体,将其水分散液与甲基丙烯酸甲酯等单体进行乳液聚合,得到支化丙烯酸酯乳液。测定不同比例分散液对乳液基本性能的影响。结果制备乳液粒径分布100~200 nm,表面张力稳定在30~35 m N/m,增加分散液的比例可适当降低乳液粘度,降低吸水率。结论将支化聚合物引入乳液聚合体系,可有效降低乳液粘度和吸水率。This work aimed to study the effects of branched monomer on the polyacrylate emulsion. A branched polymer（HBP4） was synthesized by esterification using maleic anhydride and pentaerythrite. And then it was neutralized with ammonia water. And the emulsion was synthesized by emulsion polymerization using methyl methacrylate（MMA）, butyl acrylate（BA）, acrylic acid（AA） and the branched polymer aqueous dispersions as comonomer. The particle size distribution of the branched polyacrylate emulsion was in the range of 100-200 nm, surface tension stabilized at 30~35 m N/m, and it had film-forming property and the emulsion had good stability. This branched polyacrylate emulsion had low viscosity and high stability. Adding branched polymer as monomer to the polyacrylate emulsion could decrease the viscosity of emulsion and the water absorption of latex film.

关 键 词：支化单体 聚丙烯酸酯 支化乳液 

分 类 号：TS802.3[轻工技术与工程]