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The effect of surface roughness on water repellency of exhaust membrane for intravenous transfusion

Authors： WANG Hong1, WANG Jincheng1, LV Yongcun2, XIN Gongfen2, ZHU Jingyuan2

Units： 1. Key Laboratory of Textile Science & Technology Ministry Education, Donghua University, Shanghai 201620, China; 2.Shanghai Zhenpu Medical Apparatus Co. Ltd., Shanghai 200126, China

KeyWords： Surface roughness; Contact Angle; Water repellency; Fractal dimension; Wenzel Model

ClassificationCode：R197.39；TS174.3

year,volume(issue):pagination： 2016,36(2):70-75

Abstract：

In this paper, in order to improve the water repellency of exhaust membrane for intravenous transfusion, rough surface was introduced on to the membrane by dipping method. The wettability of the exhaust membrane was characterized by contact angles. Chemical composition changes of samples before and after treatment were measured by the infrared spectrum, and pore size and permeability of the exhaust membrane before and after finishing were analyzed. The values of the fractal dimension describing roughness of untreated and treated membranes were calculated. And Wenzel model of fractal structure was verified. The results showed that it is feasible to further improve the water repellency of the membrane by introducing PVDF particles.

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Reference：

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