丙烯酰胺/N,N-亚甲基双丙烯酰接枝共聚合改性聚丙烯微孔膜  

Modification of Polypropylene Microporous Membrane Through Graft Copolymerization of Acrylamide /N,N-methylene-bisacrylamide

作　　者：邓秀玲[1] 蒋姗[1] 俞强[1] 

机构地区：[1]常州大学材料科学与工程学院江苏省太阳能电池材料与技术重点实验室,江苏常州213164

出　　处：《塑料工业》2014年第2期28-33,共6页China Plastics Industry

摘　　要：研究了聚丙烯微孔膜表面改性的化学方法,在聚丙烯微孔膜表面进行丙烯酰胺/N,N-亚甲基双丙烯酰的接枝共聚合反应,在膜表面形成聚合物交联网络,以提高膜的热稳定性和亲水性。利用全反射红外光谱(ATRFTIR)、扫描电镜(SEM)观察膜表面的结构和形貌的变化。探索了单体浓度、单体比例、引发剂浓度、反应时间、反应温度对接枝率和接触角的影响。结果表明,PP膜表面确有聚合反应的发生。DSC测试证实,接枝后的微孔膜熔点略有提高。热收缩率测试结果表明,接枝后微孔膜的热稳定性得到了一定程度的改善。Polypropylene microporous membrane surface modification was studied in this experiment. acrylamide/N, N-methylene-bisacrylamide crosslinked polymerization reacted on the surface of polypropylene microporous membrane, the crosslinked polymer network were formed on the surface of polypropylene microporous membrane to improve the thermal stability and hydrophilicity of the membrane. The membrane surface structure and surface morphology were characterized with total reflection infrared spectroscopy （ATR- FTIR） and scanning electron microscopy （SEM）. The effects of the monomer concentration, the monomer ratio, the initiator concentration, the reaction time, the reaction temperature on grafting yield and contact angle were studied. The results showed that there was polymerization reaction on the surface of PP membrane. According to DSC, the melting point of PP membrane slightly increased after grafting. Shrinkage test showed that the thermal stability of PP membrane grafted was improved to a certain extent.

关 键 词：聚丙烯微孔膜 丙烯酰胺 N N-亚甲基双丙烯酰 接枝 交联 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]