膜科学与技术

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Preparation and VDM application of PP/POE hollow fiber membrane

Authors： CHENG Penggao，Shi Xingxing，LIU Tianyu，XIANG Jun，MI Guoliang，TANG Na

Units： College of Chemical Engineering and Materials，Tianjin University of Science & Technology Tianjin

KeyWords： Hollow fiber membrane; Polypropylene; POE content; Thermally induced phase separation; Vacuum membrane distillation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(1):89-94

Abstract：

This study selected ethylene-octene copolymer (POE) as polypropylene (PP) blend toughening modified material to prepare PP/POE hollow fiber membrane by thermally induced phase separation to study the effect of POE content on membrane properties. The results showed that the optimal addition of POE was 15%, the water contact angle of the blend membrane was increased by 8.5%, the average pore size was increased by 24.83%, and the flux of vacuum membrane distillation (VMD) increased from 8.36 kg·m-2·h-1 to 12.60 kg·m-2·h-1, an increase of 50.72%; the tensile strength of the membrane increased by 12.82%, and the maximum elongation increased by 51.89%. In this work, 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 effect of POE content on membrane properties and performance was investigated. Under optimum condition ( 15%(wt) POE ), the water contact angle, the average pore size, the flux, the tensile strength, and elongation were improved 8.5%, 24.83%, 50.72%, 12.82%, and 51.89%, respectively. The flux of vacuum membrane distillation (VMD) increased from 8.36 kg·m-2·h-1 to 12.60 kg·m-2·h-1.

Funds：

天津市自然科学基金（18JCZDJC37200）；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）

AuthorIntro：

程鹏高（1982-），男，辽宁海城人，硕士，工程师，主要研究方向：膜与膜过程，海卤水资源综合利用，盐科学，E-mail：cpg@tust.edu.cn

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