摘要
研究了在乙醇/水介质中,以聚乙烯吡咯烷酮(PVP)为分散剂,偶氮二异丁腈(AIBN)为引发剂,聚苯乙烯为种子时,苯乙烯(St)和α-甲基丙烯酸(MAA)进行种子聚合的行为。主要考察了固含量、溶剂体系、单体体系等诸因素对种子聚合反应及产物的影响。在实验过程中,通过改变各种条件,成功筛选出制备颗粒大小均匀(2 1μm)、粒径分布窄的微米级聚合物均球的最佳条件,探索出能增大均球表面积的实验方法,以便解决接枝功能基容量低的问题。
In this work, micro-size monodisperse polymer microspheres were prepared through seed polymerization of Styrene and α-methacrylic acid with 2,2'-azobisbutyronotrile as initiator in ethanol-water medium in the presence of 2.1 μm monodisperse polystyrene seed particles produced by a seed polymerization. The influences of solid content,alcohol/water weight ratio,the monomer concentration and styrene/methacrylic acid weight ratio on the seed polymerization and the polymerization products were investigated.The optimum conditions of the seed polymerization for producing the microspheres with good monodispersity and colloidal stability were determined.
出处
《化学与粘合》
CAS
2004年第5期260-263,共4页
Chemistry and Adhesion
