双马来酰亚胺交联单分散聚苯乙烯微球的制备及表征  

Preparation and Characterization of Bismaleimide Crosslinked Monodisperse Polystyrene Microspheres

作　　者：张光华[1] 刘林涛[1] 朱雪丹[1] 申毅[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021

出　　处：《高分子材料科学与工程》2010年第2期135-138,共4页Polymer Materials Science & Engineering

基　　金：陕西科技大学研究生创新基金资助(08006)

摘　　要：采用分散聚合法,以苯乙烯为单体,二苯甲烷双马来酰亚胺(BDM)为交联剂,制备了单分散交联聚苯乙烯微球(St/BDM)。研究了分散聚合反应中单体(St)、引发剂(AIBN)、分散剂(PVP)、交联剂(BDM)用量对微球粒径和粒径分布的影响。通过优化反应条件,合成了平均粒径为3.03μm(ε=0.05)的单分散交联聚苯乙烯微球。热稳定性分析和耐溶剂性实验结果表明,二苯甲烷双马来酰亚胺(BDM)交联的聚苯乙烯微球热稳定性和耐溶剂性能比线性的聚苯乙烯微球有了很大的提高。当失重5%时,聚合物的热分解温度由交联前的306℃上升到交联后的328℃。A kind of monodispersed crosslinked polystyrene microsphere were preparea oy alspersLon polymerization using polystyrene as monomer, N, N＇-4,4＇diphenylmethanebismaleimide（BDM） as crosslinker. The effect of the concentrations of monomer, initiator, stabilizer and crosslinker on the particle size and size distribution of polystyrene mierospheres were investigated. Monodispersed crosslinked polystyrene microspheres in an average diameter of 3.03μm and a dispersion parameter of 0.05 were prepared on the optimum conditions. Thermal analysis and solvent-resistant experiment show crosslinked polystyrene mierospheres have better heat-resistant and solvent- resistant properties than linear polystyrene microspheres. When the weight loss of 5%, Thermal decomposition temperature of crosslinked polystyrene microspheres was increased than linear polystyrene microspheres from 306℃to 328 ℃.

关 键 词：分散聚合 单分散 聚苯乙烯微球 热稳定性 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]