PP/POE中空纤维膜的制备及其VMD应用研究  

Preparation and VMD application of PP/POE hollow fiber membrane

作　　者：程鹏高 史星星 刘天宇 项军 米国梁 唐娜 CHENG Penggao;SHI Xingxing;LIU Tianyu;XIANG Jun;MI Guoliang;TANG Na(College of Chemical Engineering and Material Science,Tianjin University of Science&Technology,Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization,Tianjin 300457,China)

机构地区：[1]天津科技大学化工与材料学院,天津市卤水化工与资源生态化利用重点实验室,天津300457

出　　处：《膜科学与技术》2021年第1期89-94,101,共7页Membrane Science and Technology

基　　金：天津市自然科学基金(18JCZDJC37200);天津市科技计划项目(18YFZCSF00330);天津市自然基金(17JCQNJC13200);天津市海洋资源与化学重点实验室项目(201404);教育部创新团队发展计划项目(IRT-17R81)。

摘　　要：选用乙烯-辛烯共聚物(POE)作为聚丙烯(PP)共混增韧改性材料,通过热致相分离法制备PP/POE中空纤维膜,研究POE含量对膜性能的影响.结果表明,POE最佳添加量为15%,共混膜的水接触角提高8.5%,平均孔径提高32.26%,真空膜蒸馏(VMD)通量从8.36kg/(m^2·h)增加到12.60kg/(m^2·h),提高了50.72%;膜的拉伸强度提高了12.82%,最大伸长率提高了51.90%.Ethylene-octene copolymer(POE)was used as toughening modification material to prepare PP/POE co-blend hollow fiber membrane by thermally induced phase separation.The effects of POE content on membrane properties and performance were investigated.Under optimum condition(15%POE),the water contact angle,the average pore size,the flux,the tensile strength,and elongation were improved 8.5%,32.26%,50.72%,12.82%,and 51.90%,respectively.The flux of vacuum membrane distillation(VMD)increased from 8.36kg/(m^2·h)to 12.60kg/(m^2·h).

关 键 词：中空纤维膜 聚丙烯 POE含量 热致相分离 真空膜蒸馏 

分 类 号：TQ028.8[化学工程]