Study on the Hydrophilicity of Nafion Membrane Surface

Authors

Yanbing Zu
Chuansin Cha

Abstract

Due to its high chemical stability and ion selective permeability, Nafion membrane has been applied in many electrochemical systems. The surface hydrophilicity is one of the main factors affecting its performance. In this paper, the bound bubble method is introduced as a suitable way to measure the contact angles between Nafion membrane and various aqueous solutions. During the measurement, Nafion membrane is saturated with given electrolyt solution. The hysteresis of the contact angles observed in the measurement is attributed to the co existance of hydrophobic and hydrophilic domains at the membrane surface. The effect of the solution surface tension on the contact angle is demonstrated. It is shown that Nafion membrane can be rendered more hydrophilic by modification with sulfonic acid type perfluorinated surfactant.

Keywords

Nafion membrane, Surface hydrophilicity, Contact angle

DOI Link

https://doi.org/10.61558/2993-074X.3097

Publication Date

1997-02-28

Online Available Date

1997-02-28

Revised Date

1997-02-28

Received Date

1997-02-28

Recommended Citation

Yanbing Zu, Chuansin Cha. Study on the Hydrophilicity of Nafion Membrane Surface[J]. Journal of Electrochemistry, 1997 , 3(1): Article 8.
DOI: 10.61558/2993-074X.3097
Available at: https://jelectrochem.xmu.edu.cn/journal/vol3/iss1/8

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