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Influence of air gap length and bore liquid concentration on cellulose hollow fiber membranes structure and properties

Authors： LIANG Yi, SONG Jun, CHENG Bowen*,LU Fei

Units： Key Laboratory of Hollow Fiber Membrane Material and Membrane Process,Department of education,Tianjin Polytechnic university, Tianjin300160,China

KeyWords： Air gap length; Bore liquid concentration; [AMIM]Cl;cellulose; hollow fiber membrane

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2011,31(2):83-88

Abstract：

The cellulose hollow fiber membranes were spinned using ionic liquid 1-ally-3methylimidazolium chloride([AMIM]Cl) as solvent. Influence of air gap length and bore liquid concentration on the hollow fiber membranes structure and properties were investigated. Inner- and outer- surfaces morphology and the support layer structure of the membranes were studied using scanning electron microscopy(SEM). Furthermore, permeation properties and mechanical properties of the membranes, including water flux, retention rate, ultimate tensile strength(UTS), elongation at break, young's modulus were also tested. The results induce that, with the increase of air gap length and bore liquid concentration, the pores become smaller and the inner surface show more regular. Contrary to decreased porosity and water flux, mechanical properties of ultimate tensile strength, elongation at break, young's modulus show a increased tendency. Compared with the bore liquid concentration, the air gap length has a more significant influence on the hollow fiber membrane properties.

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AuthorIntro：

第一作者：梁义，（1985- ）男，河南周口人，硕士研究生，主要研究纤维素中空纤维膜，E-mail: liangyi_tjpu@yahoo.cn； *通讯作者：程博闻，（1963- ）男，湖北黄冈人，教授，主要从事膜材料及工艺研发工作，E-mail: bowen@tjpu.edu.cn

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