分散聚合-种子溶胀聚合法制备中空微球的研究  

Preparation of Hollow Microspheres by Dispersion Polymerization-Seeded Swelling Polymerization

作　　者：刘琦[1] 黄驰[1] 罗石[1] 刘宗惠[1] 刘白玲[1] 

机构地区：[1]中国科学院成都有机化学研究所

出　　处：《合成化学》2008年第2期127-132,共6页Chinese Journal of Synthetic Chemistry

摘　　要：采用分散聚合法制备聚苯乙烯(PSt)。以甲苯-正辛醇作致孔溶剂,过氧化苯甲酰为引发剂,PSt为单分散种球,反应单体苯乙烯和交联单体二乙烯基苯(DVB)通过种子溶胀聚合法,在水介质中制备了呈单分散的中空聚合物微球[P(St-DVB),粒径5μm^8μm],其形态及热力学行为经SEM,DSC和TGA表征。讨论了DVB用量及溶剂组成对P(St-DVB)形态的影响。Polystyrene（PSt） was prepared by dispersion polymerization. Monodisperse hollow micro- spheres [ P （ St-DVB）, diameter size 5μm - 8μm ] were synthesized from PSt （ monodisperse seeded spheres）, styrene （reaction monomer） and divinylbenzene （DVB, crosslinking monomer） by dispersion polymerization-seeded swelling polymerization in water medium using toluene - n-octanol as the hollowing solvent system, benzoyl peroxide as an initiator. The morphology and thermodynamics behavior of P（St-DVB） were characterized by SEM, DSC and TGA. The influence of DVB amount and solvent system on morphology of P（St-DVB） were investigated.

关 键 词：苯乙烯 二乙烯基苯 聚苯乙烯 分散聚合 种子溶胀聚合 中空微球 

分 类 号：O632.7[理学—高分子化学]