橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2009 Vol.32 No.6 P.454-458

 橡胶技术网

粒径可控的聚丙烯酸丁酯/聚甲基丙烯酸甲酯核壳乳液的制备及表征

杨龙　 唐颂超　 王锡莹　 王庆海　

摘　要：采用种子乳液聚合法制备了聚丙烯酸丁酯(PBA)乳液,然后通过第二单体甲基丙烯酸甲酯的预溶胀法聚合制备了PBA/聚甲基丙烯酸甲酯(PMMA)乳液,用激光散射粒度仪和透射电子显微镜对乳液粒径和结构进行了表征.结果表明,当乳化剂十二烷基硫酸钠质量分数为丙烯酸丁酯的1.5%时,可制备粒径为53.6 nm且分布窄的PBA种子乳液;通过调整补加乳化剂、单体与种子乳液的用量,可制得粒径为53.6～443.8 nm的一系列单分散PBA乳液;PBA/PMMA乳液具有完善的核壳结构,且在核壳两相间存在着一个过渡层.
关键词：种子乳液聚合;聚丙烯酸丁酯;预溶胀;聚甲基丙烯酸甲酯;粒径;核壳结构
分类号：TQ333.97 　文献标识码：A
文章编号：1000-1255(2009)06-0454-05

Preparation and characterization of particle controlled poly(butyl acrylate)/poly(methyl methacrylate)core-shell emulsion

Yang Long（Key Laboratory of Shanghai City on Novel Polymer Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　 Tang Songchao（Key Laboratory of Shanghai City on Novel Polymer Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　 Wang Xiying（Key Laboratory of Shanghai City on Novel Polymer Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　 Wang Qinghai（Key Laboratory of Shanghai City on Novel Polymer Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）　

Abstract：The poly(butyl acrylate)(PBA) emulsion was synthesized by seed emulsion polymerization, and the PBA/poly(methyl methacrylate)(PMMA) core-shell emulsion was prepared by preswelling the second monomer methyl methacrylate in the PBA emulsion. Particle diameter and structure of the emulsion were detected by laser scatter particle analyzer and transmission electron microscope . The results showed that when mass fraction of emulsifier was 1.5% of monomer, PBA seed emulsion with particle size of 53.6 nm and narrow distribution was prepared. A series of PBA emulsion with particle size from 53.6 to 443.8 nm were gained by adjusting amount of the supplementing emulsifier, seed emulsion and butyl acrylate. The prepared PBA/PMMA had perfect core-shell structure and there was a transition layer between the core and shell layers.
Keywords：seed emulsion polymerization; poly-(butyl acrylate); pre-swelling; poly(methyl methacrylate); particle size; core-shell structure

基金项目：上海市重点学科建设资助项目(B 502).
作者简介：杨龙(1984-),男,硕士研究生.
作者单位：杨龙（华东理工大学,材料科学与工程学院,上海市先进聚合物材料重点实验室,上海,200237）　
　　　　　唐颂超（华东理工大学,材料科学与工程学院,上海市先进聚合物材料重点实验室,上海,200237）　
　　　　　王锡莹（华东理工大学,材料科学与工程学院,上海市先进聚合物材料重点实验室,上海,200237）　
　　　　　王庆海（华东理工大学,材料科学与工程学院,上海市先进聚合物材料重点实验室,上海,200237）　

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收稿日期：2008年10月22日

修稿日期：2009年7月20日

出版日期：2009年11月15日