摘要
采用偶氮二异丁基盐酸脒(AMPMDHC)为引发剂,用无皂乳液聚合方法制备单分散性PMMA微球,合成粒径为500nm的单分散PMMA微球的聚合条件是:MMA/H2O=20∶100(ml),温度为70℃,AMPMDHC用量为0.06g,反应时间为1.5h。实验结果表明:(1)引发剂用量越多,PMMA微球粒径越小,但对微球粒径分布影响较小;(2)反应温度升高,微球粒径增大,单分散性降低;(3)微球的粒径随着水的用量增大而降低,当MMA/H2O小于1/6时,微球粒径趋于180nm。
The monodisperse poly （methyl me,acrylate）（ PMMA ） microspheres （500nm） were synthesized by emulsifier-free emulsion polymerization using 2,2‘ -Azobis（2-methylpropionamidine） dihydrochloride （ AMPMDHC ） as the initiator. The best polymerization condtion was as follows ： MMA/H2O = 20 ： 100 （ ml）, the content of AMPMDHC was 0.06g, the reaction temperature was 70℃, and the reaction time was 1.5h. The results show that ： （ 1 ） the size of PMMA microsphere decreased with the increase of AMPMDHC content, but the distribution of microspheres was not influenced by the content of AMPMDHC ; （2） the size of PMMA microsphere increased and the distribution of microspheres decreased with the increase of reaction temperature ; （3） The size of PMMA microspheres increased with the increase of water content, when monomer/water 〈 1/6, the size of PMMA microspheres decreased to 180rim.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2006年第6期871-873,共3页
Journal of Materials Science and Engineering
基金
湖南省教育厅资助项目(05C140)
关键词
无皂乳液聚合
聚甲基丙烯酸甲酯微球
偶氮二异丁基盐酸脒
emulsifier-free emulsion polymerization
poly （methyl methacrylate ） microspheres
2, 2‘-Azobis （2- methylpropionamidine ） dihydrochloride
作者简介
麻明友（1965-）,男,副教授,主要从事材料和食品科学研究。E-mail：mamy-9589@163．com。
