摘要
采用双油相（甲醇／石油醚）悬浮聚合法成功制备出粒径在150—400μm的甲基丙烯酸缩水甘油酯（GMA）与丙烯酰胺（AM）共聚交联微球。考察了搅拌速度、两油相比例、分散剂（Span-80）用量及分散相组成等因素对微球粒径的影响规律；使用红外光谱表征了微球的化学结构。结果表明，搅拌速度、分散剂用量与分散相的组成对MBA／AM／GMA交联微球的粒径都有影响，其中最主要的影响因素是搅拌速度及两油相比例。制备粒径约为200μm的交联微球，适宜的条件为：搅拌速度400rpm，两油相比例甲醇/石油醚=1：4（V／V）。分散剂用量为1．25％。
The suspension method with two organic phases was adopted to prepare MBA/AM/GMA microspheres, the diameter of which could be controlled in the range of 150-400μm. The effects of the agitating rate, the ratio of the two oil phases, the used amount of dispersant and the solvent composition of dispersed phase on the particle diameter were examined. The chemical structure of the product was characterized with FTIR spectrum, and the morphology of the microspheres was observed with microscope. It was found that the agitating rate and the ratio of the two oil phases were primary factors that influence the particle diameter. In order to prepare MBA/AM/GMA microspheres with diameter of about 200μm, the optimal condition is as follows： agitating rate was 400rpm, the ratio of CH3 OH to H20 in dispersed phase was 7：3, the ratio of the two oil phases （ methyl alcohol to petroleum ether） was 4 ： 1 （ V/V）, and the nsed amount of dispersant was 1.25 percent of the amount of petroleum ether.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2007年第1期56-59,共4页
Chemical Research and Application
关键词
双油相悬浮聚合
甲基丙烯酸缩水甘油酯
丙烯酰胺
交联微球
two oil phase suspension polymerization
glycidyl methacrylate
acrylamide
crosshnking microsphere
