聚(苯乙烯-丙烯酸)磁性高分子微球的制备及性能  

Synthesis and Property of P(St/AA) Magnetic Polymer Microspheres

作　　者：杨瑞成[1,2] 郧栋[1] 穆元春[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室 [2]兰州理工大学有色金属合金省部共建教育部重点实验室,甘肃兰州730050

出　　处：《高分子材料科学与工程》2009年第7期114-117,共4页Polymer Materials Science & Engineering

基　　金：甘肃省有色金属新材料省部共建国家重点实验室基金(SKL05011)

摘　　要：以苯乙烯为单体、丙烯酸为功能基单体、N,N′-亚甲基双丙烯酰胺为交联剂,加入自制的纳米Fe3O4磁流体,采用分散聚合的方法制备出聚(苯乙烯-丙烯酸)磁性高分子微球。采用XRD、FT-IR、SEM、752N型分光光度计和化学滴定法,对所制得的磁性高分子微球进行了表征及性能分析,研究了交联剂N,N′-亚甲基双丙烯酰胺的加入对其性能的影响。结果表明,所制磁性微球粒径在0.7μm^2 m之间,单分散性好;交联剂对微球性能有着明显的影响,随着交联剂的增加,微球粒径变小、粒径分布变宽、表面羧基含量增加、耐酸碱性增强,最佳含量应为单体用量的4%。The magnetic polymer microspheres were produced by dispersion polymerization method. Experiments were performed with styrene monomer, Fe3O4 magnetic fluid, acrylic acid as the functional monomer and N, N＇- methylene-bis-acrylamide as the cross-linking monomer. The properties of the magnetic polymer microspheres were examined by XRD, FT-IR, SEM , 752N spectrophototmeter and chemical titration. The influence of N, N＇- Methylene-bis-acrylamide on magnetic polymer microspheres was researched. The results show that with the increase of cross-linking agent, microspheres particle size become small, particle size distribution broadens, surface carboxyl content increases, acid and alkaline resistance enhancements. The best content of cross-linking agent should be 4 % of monomer dosage.

关 键 词：Fe3O4纳米微粒 磁性高分子微球 分散聚合 交联剂 

分 类 号：TB383[一般工业技术—材料科学与工程]