基于聚合物中空微球构建膜内纳米空腔及其对气体渗透性能的影响  

Construction of Nanocavity in Membranes Based on Hollow Polymer Microspheres and Effects on Gas Permeation Performance

作　　者：康长勇 丁晓莉[1] 赵红永[1] 王鑫兰 张玉忠[1] 王丽娜[2] KANG Changyong;DING Xiaoli;ZHAO Hongyong;WANG Xinlan;ZHANG Yuzhong;WANGLina(State Key Laboratory of Separation of Membrane and Membrane Processes,Tianjin Polytechnic University,Tianjin 300387,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116032,China)

机构地区：[1]天津工业大学省部共建分离膜与膜过程国家重点实验室,天津300387 [2]中国科学院大连化学物理研究所,大连116032

出　　处：《高等学校化学学报》2018年第12期2820-2824,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21506160,21776217)资助

摘　　要：分别以四氢呋喃丙烯酸酯和双季戊四醇六丙烯酸酯为油相反应单体和交联剂,利用界面引发剂在无表面活性剂微乳液油水界面处引发聚合,制备了中空微球,浇铸形成具有纳米空腔的中空微球膜.考察了膜内纳米空腔对分离膜气体渗透性和分离性的影响.结果表明,制备的中空微球平均粒径为116. 7 nm,中空结构明显,壳层厚度为10～20 nm;中空微球膜的渗透分离性能较壳层材料的本征值有显著提升,在35℃,0. 2 MPa条件下,CO_2的渗透系数增大1. 4～5. 7倍,且分离系数也有所提升.Hollow polymer microspheres were prepared by polymerization of tetraethylane and dipentaerythritol hexaacrylate at the oil-water interface of surfactant-free microemulsion using the interfacial initiator.The membranes with nanocavities were formed by casting the hollow microspheres microemulsion and the effects of the nanocavities on the gas permeability and selectivity of the separation membrane were investigated.The results show that the resulting hollow microspheres have an average size of 116.7 nm,and a hollow structure with a shell thickness of 10-20 nm.The permeability of membranes with nanocavities increased significantly compared with the intrinsic permeability of shell material.At 35℃,0.2 MPa,the permeability coefficient of CO2 of hollow microspheres membranes increased by 1.4-5.7 times and the separation coefficient also improved.

关 键 词：CO_(2)分离膜 聚合物中空微球 微乳液聚合 气体渗透性能 纳米空腔 

分 类 号：O631[理学—高分子化学]