以甲醇为分散介质制备聚苯乙烯微球  

Preparation of Polystyrene Microspheres with Methanol as the Dispersion Medium

作　　者：高娜[1] 尚颖[1] 王涛[1] 于艳梅[1] 石山[1] 

机构地区：[1]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2010年第4期341-348,共8页Journal of Shenyang University of Chemical Technology

基　　金：辽宁省教育厅高等学校创新团队项目(2008T155)

摘　　要：采用分散聚合法,以甲醇为分散介质,聚乙烯基吡咯烷酮(PVP)为分散剂,偶氮二异丁腈(AIBN)为引发剂,合成微米级的聚苯乙烯(PS)微球.所制备的PS微球具有良好的球形度,且表面光滑,无破损,无缺陷.讨论分散剂质量分数、引发剂质量分数、单体质量分数以及聚合温度对PS微球粒径及其分布的影响.结果表明:随着PVP质量分数的增加,PS微球的粒径减小,粒径分布变宽;随着苯乙烯和AIBN质量分数的增加,PS微球的粒径增大;随着聚合温度的升高,PS微球的粒径增大.Micron-size polystyrene（PS） particles were successfully synthesized using methanol as the dispersion medium,polyvinylpyrrolidone（PVP） as the stabilizer,and azobisisobutyronitrile（AIBN） as the initiator.The resultant PS particles showed a good sphericity with smooth surface.Effects of stabilizer concentration,initiator concentration,monomer concentration,and polymerization temperature on the PS particle size and size distribution were investigated.With increasing the PVP concentration,PS particle size decreased and size distribution became broad.PS particle size increased with increasing the styrene and AIBN concentrations.The increase of polymerization temperature led to increase of the PS particle size.

关 键 词：分散聚合 聚苯乙烯 微球 粒径 粒径分布 

分 类 号：TQ050.425[化学工程]