摘要
用无皂乳液聚合法,通过控制聚合时电解质浓度([M])、丙烯酸浓度([AA])及其加入时机等条件合成了粒径和表面羧基含量可控的P(Stc-oA-A)乳胶粒子,研究了P(Stc-oA-A)乳胶粒子的结构随聚合条件变化的规律。结果表明,聚合时体系中[AA]越高、加入AA越晚、[M]越低,所获得的乳胶粒子的粒径越小;[AA]越高、AA加入的越早,则表面羧基含量越高。
The poly(styrene-co-acrylic acid)(P(St-co-AA))latexes with fine adjustable particle size and surface-bound carboxylic acid content were available by controlling the copolymerization conditions such as,electrolyte concentration([M])and the charging occasion of AA(δ)etc.used in the soap-free emulsion copolymerization.The effects of the copolymerization conditions on the structure of the synthesized P(St-co-AA)latexes were investigated.It was shown that the particle size of the synthesized P(St-co-AA)latexes decreased with the increasing,delaying δ or decreasing[M],while the surface-bound carboxylic acid content of the latexes decreased with decreasingor delaying δ.
出处
《微纳电子技术》
CAS
2005年第7期318-321,共4页
Micronanoelectronic Technology
基金
教育部优秀青年教师资助计划(2002350)
国家863计划项目资助(2001AA339020)
关键词
无皂乳液聚合
聚(苯乙烯-共-丙烯酸)乳胶粒子
粒径
表面羧基含量
soap-free emulsion polymerization
poly(styrene-co-acrylic acid)latexes
particle size
surface-bound carboxylic content
