膜科学与技术

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Hydraulic Permeability of Electrospun Fibrous Membranes

Authors： CAI Jingcheng，SUN Ruisong，ZHANG Zhihao，GUO Fei*

Units： School of Energy and Power Engineering, Dalian University of Technology, Dalian 116023,Liaoning, China

KeyWords： hydraulic permeability; fibrous membrane; electrospinning; porosity

ClassificationCode：O484.2

year,volume(issue):pagination： 2018,38(3):41-46

Abstract：

?Polyacrylonitrile (PAN) fibrous membranes with various fiber diameters were fabricated by electrospinning. The hydraulic permeability with various flow velocities was tested on the lab scale unit and analyzed based on Darcy's theory and Happel's model. The relations between fiber diameter, porosity, flow rate, and compressibility were studied. The results indicated that the electrospun membranes experience an increase of fiber diameter and decreases of porosity and hydraulic permeability with the increase of the flow velocity. This was due to the increasing fiber slippage and fiber–fiber contact at a higher pressure by the flow-induced compression. The hydraulic permeability and porosities of the PAN membranes with smaller fiber diameters were smaller than that of the membranes with greater fiber diameters over the range of test pressures.

Funds：

中央高校基本科研业务费专项资金 (DUT17JC05)。

AuthorIntro：

蔡景成(1990 - )，男，河南省漯河人，博士研究生，研究方向为膜法脱盐。通讯作者：郭飞，教授，博士生导师，研究方向为先进膜材料、碳素纳米材料。E-mail：feiguo@dlut.edu.cn

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