膜科学与技术

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Preparation of CTA hollow fiber membrane with micron-sized inner and outer diameters

Authors： WEI Yongming, WU Rongrong, XU Haitao, XU Zhenliang

Units： (State Key Laboratory of Chemical Engineering，Membrane Science and Engineering R&D Laboratory，Chemical Engineering Research Center，East China University of Science and Technology，Shanghai 200237，China)

KeyWords： Cellulose triacetate; hollow fiber membrane; dry-wet spinning; micron-sized inner and outer diameter

ClassificationCode：

year,volume(issue):pagination： 2018,38(5):8-14

Abstract：

Cellulose triacetate (CTA) hollow fiber membrane with micron-sized inner and outer diameters was prepared using dry-wet spinning method by changing fabrication parameters to control the dimension of hollow fiber membranes. The results show that the inner and outer diameter of the hollow fiber membranes increased with the increase of dope and bore flow rate and decrease with the increase of take-up speed. The inner and outer diameter decreased slightly with the increase of air gap distance. The influence of dope and bore flow rate on membrane diameters was most significant among all the parameters. Besides, the effect of these factors on morphology and pure water flux of hollow fiber membranes was investigated. The results showed that morphology of membranes in this study is insensitive to these factors and all prepared membranes have spongy-like structure. Pure water flux of membranes increased obviously with the increase of dope and bore flow rate but increased slightly with the increase of take-up speed and air gap distance.

Funds：

国家科技支撑计划（2014BAB07B01和2015BAB09B01）；中国工程院咨询项目（2017-XZ-08-04-02）

AuthorIntro：

第一作者简介：魏永明（1977－），男，山东潍坊市人，博士，副教授，从事分离膜微观结构调控研究，E-mail：ymwei@ecust.edu.cn，电话：13311998720；*共同第一作者：吴荣荣（1993-），女，河南省濮阳市人，硕士生，研究方向为膜色谱，Email：m15300868632@163.com，电话：15300868632。

Reference：

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