高固含量交联型苯丙微乳液制备及表征  

Preparation and Characterization of High Solid Crosslinkable Styrene/Acrylate Copolymer Microemulsion

作　　者：施建平[1] 张宏伟[1] 王亚龙[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《涂料工业》2009年第5期11-13,18,共4页Paint & Coatings Industry

基　　金：广州市科技计划项目(2007Z3-D0201)资助

摘　　要：以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、丙烯酸(AA)原料,以N-羟甲基丙烯酰胺(NMA)为功能性单体,用十二烷基硫酸钠(SDS)为乳化剂,过硫酸铵(APS)为引发剂,采用种子乳液聚合法合成了高固含量交联型苯丙微乳液。研究了种子聚合阶段引发剂用量、种子用量、St用量、NMA用量对微乳液性能的影响,利用粒径分析仪、红外光谱(FT-IR)、差示热量扫描(DSC)等对微乳液进行了表征。结果表明:在乳化剂用量为单体总量1%的条件下合成的微乳液固含量为43.6%,平均粒径69.7 nm,分散度0.079;合成的苯丙微乳液所有单体发生共聚反应,机械稳定好。The title high gared by use of styrene （St） solid crosslinkable microemulsion styrene/acrylate copolymer emulsion was premethyl acrylate （ MMA ）, butyl acrylate （ BA ）, acrylic acid （ AA ） and N - hydroxymethyl acrylamide（NMA） as co -monomers and ammonium persulfate（APS） as initiator, sodium dodecyl sulfate（SDS） as emulsifier in a process of seed emulsion polymerization. The effects of the dosage of the initiator in seed polymerization, the amount of seed monomer, St and NMA on the property of the emulsion were discussed. The microemulsion was characterized by FT- IR, DSC and particle size analyzer. The results showed that the average particle size of the microemulsion was 69.7 nm, polydiversity is 0. 079, and solid content is 43.6% when the emulsifier dosage was 1% of the total monomer. All the monomers were copolymerized, showing a good mechanical stability.

关 键 词：种子聚合 微乳液 粒径 黏度 吸水率 

分 类 号：TQ630.4[化学工程—精细化工]