分散聚合法制备单分散聚（丙烯酰胺-co-衣康酸）微球及其吸水溶胀性  

Synthesis and Water Absorbency Property of Monodispersed Poly （acrylamide-co-itaconic acid） Spheres by Dispersion Polymerization

作　　者：施冬健[1] 高燕[1] 孙齐伟[1] 陈明清[1] 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《纳米科技》2014年第2期19-27,共9页

摘　　要：采用一次性加入法和延迟滴加法两种不同的分散聚合方法制备了一系列单分散聚（丙烯酰胺-OO-衣康酸）（P（AM-co-IA））微球，反应以亲水性单体丙烯酰胺（AM）和衣康酸（IA）为原料，N，N’-亚甲基双丙烯酰胺（Bis-A）为交联剂，偶氮二异丁腈（AIBN）为引发剂，聚乙烯吡咯烷酮（PVP-K30）为分散剂，探讨了反应条件对微球粒径的影响及其吸水溶胀性能，结果表明，所得P（AM-CO-IA）微球的粒径随着IA比例的增加而增大，而随着分散剂、引发剂和交联剂用量的增加而减小；一次性加入法所得微球的吸水溶胀性能较差．而通过延迟滴加法制备得到的微球由于具有均匀的交联网络结构，因此溶胀性能较好，其最佳溶胀倍率为305．71％。Monodispersed poly（acrylamide-co-itaconic acid） （P（AM-co-IA）） spheres were successfully prepared from acrylamide （AM） and itaconie acid （IA） monomers by batch dispersion polymerization and delayed addition dispersion polymerization, respectively. Effects of monomer ratios and concentrations of stabilizer（poly（N-vinylpyrrolidone）, PVP）, initiator （2,2＇-azobisisobutyronitrile, AIBN）and cross-linker （N,N＇ -methylenebisacrylamide, Bis-A） on particle sizes and size distributions were systematically investigated. The particle size increased with the increase of IA content, whereas decreased with increase the concentration of PVP-K30, AIBN and Bis-A. After swollen in water, the particles prepared from batch method showed some dissociation. showed high swellability at 305.71%, due to the However, the particles from delayed addition method intense and homogenous network in the particles.

关 键 词：丙烯酰胺 分散聚合 吸水溶胀性 

分 类 号：TQ316.6[化学工程—高聚物工业]