马来酸酐/N-乙烯基吡咯烷酮双单体接枝聚丙烯的制备及对聚丙烯微孔膜的亲水改性  

Preparation of Polypropylene Grafted with Bi-Monomer Maleic Anhydride/N-Vinyl Pyrrolidone and Hydrophilic Modification of Polypropylene Microporous Membrane

作　　者：夏艳平 纪波印 陈慧蓉 马文中 曹峥 陶国良 Yanping Xia1, Boyin Jiz, Huirong Chen1, Wenzhong Ma1, Zheng Caoa , Guoliang Tao1(1. Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164 , China ; 2. Jiangsu Qiyi Technology Co. LTD , Danyang 212322, China)

机构地区：[1]江苏省环境友好高分子材料重点实验室常州大学材料科学与工程学院江苏省光伏科学与工程协同创新中心,江苏常州2131642 [2]江苏奇一科技有限公司,江苏丹阳212322

出　　处：《高分子材料科学与工程》2018年第9期132-138,共7页Polymer Materials Science & Engineering

基　　金：江苏省光伏科学与技术国家重点实验室培育建设点开放课题(SKLPSTKF201503);国家自然科学基金资助项目(21644002;21406017)

摘　　要：以马来酸酐(MAH)为功能单体,N-乙烯基吡咯烷酮(NVP)为共聚单体,采用熔融接枝法制备两亲性改性剂PP-g-(MAH-co-NVP),并通过热致相分离法制备聚丙烯(PP)亲水微孔膜。通过红外光谱仪和元素分析仪表征了PP-g-(MAHco-NVP)的化学结构和接枝率,使用差示扫描量热仪、X射线衍射仪表征了PP-g-(MAH-co-NVP)的结晶性能。利用接触角、热失重分析、扫描电子显微镜和孔隙率测试对改性前后的PP膜进行研究。结果显示,亲水支链成功接枝到PP大分子链上,相比于MAH作为唯一的接枝单体,NVP的加入使MAH的接枝率增加了270%;且NVP的加入促进了PP分子链的结晶。改性PP微孔膜的热稳定性能提高,膜孔数增多,孔隙率增加了2. 8%。并且改性PP微孔膜的亲水性也得到改善,接触角下降了28. 5%。An amphiphilic polypropylene-g-poly [ maleicanhydride-co-vinylpyrrolidone ] （ PP-g-（ MAH-co-NVP ） ） modifier was prepared by melt grafting polymerization using maleicanhydride （MAH） as grafting monomer and N- vinyl pyrrolidone （NVP） as comonomer. And hydrophilic microporous membrane comprising PP and PP-g-（MAH- co-NVP） was prepared via thermally induced phase separation method. The chemical structure and grafting degree （GD） of PP-g-（MAH-co-NVP） were determined by FT-IR and elemental analysis. Crystallization property and rheological behavior of modifier were investigated by DSC, XRD. Contact angle measurement, TGA, SEM and porosity analysis were used to study the effect of hydrophilic modification on PP membranes. The results show that hydrophilic branched chains are grafted onto PP macromolecular chains successfully; the GD of MAH is increased by 270 % when the mole ratio of MAHANVP is 1/1. And the crystallization of PP is accelerated by the addition of the second monomer NVP. Thermostability, pore number and porosity of modified membranes are better than those of the pure PP membrane. The hydr0philicity of modified PP microporous membrane is significantly impr0ved and the contact angle decreases by 28.5 %.

关 键 词：聚丙烯 马来酸酐 N-乙烯基吡咯烷酮 改性剂 亲水微孔膜 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]