膜科学与技术

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Study on the hydrophilic modification and properties of PVDF-PET woven tubal hollow fiber composite membrane

Authors： Zhang Ying1, Wang Lei1, Rong Zhi-yong1, Chen Li-cheng2, Wang Xu-Dong1

Units： 1. School of Environmental and Municipal Engineering, Xi’an University of Architecture & Technology,Xi’an 710055, China.

KeyWords： hydrophilization modifiers; PET woven tubal; composite membrane ；municipal secondary effluent

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(3):69-73

Abstract：

PVDF-PET woven tubal hollow fiber composite membrane were prepared using PET woven tubal for support layer, PVDF for film base material and PVA for hydrophilization modifiers in this study. The effect of the parameters of woven tube ,PVA concentration in casting solution on membrane performance and the relevant property on filter municipal secondary effluent were investigated. The test results show that when outside diameters（OD）of the PET woven tubal is increased or the mesh is decreased, the water flux and average pore diameter of composite membrane increased dramatically, while the porosity decreased. when OD was 2.1 mm mesh was 45,the water flux was 1516 L?m-2?h-1, the porosity attained 61.6%. And with the increase of PVA concentration, the water flux , average pore diameter and the porosity of composite membrane increased, meanwhile the holes in the surface of composite membrane from tiny to large. When PVA concentration was 4%，the composite membrane shown the best performance.

Funds：

国家自然科学基金项目（51278408，51178378）；陕西省教育厅专项（2013JK0884）；陕西省科技统筹创新工程计划（2012KTCL03-06）

AuthorIntro：

张颖(1987-),女,河北省唐山市，硕士研究生,研究方向为分离膜的制备与膜法水处理应用, 联系电话:18392180873, E-mail:zhangying9663@126.com

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