欢迎访问《电化学(中英文)》期刊官方网站,今天是
研究论文

Nafion膜表面亲水性研究

  • 祖延兵
展开
  • 武汉大学化学系

收稿日期: 1997-02-28

  修回日期: 1997-02-28

  网络出版日期: 1997-02-28

Study on the Hydrophilicity of Nafion Membrane Surface

  • Zu Yanbing Cha Chuansin
Expand
  • (Dept. of chem., Wuhan Univ., Wuhan 430072

Received date: 1997-02-28

  Revised date: 1997-02-28

  Online published: 1997-02-28

摘要

Nafion膜在电化学体系中的应用越来越广泛,而其表面亲水性往往直接影响着使用性能.本文介绍一种适宜于表征Nafion膜表面亲水性的接触角测量方法,即束缚气泡法,并讨论了该膜与水溶液接触角的滞后现象、溶液表面张力的影响,简介了用全氟表面活性剂改善Nafion膜表面亲水性的尝试.

本文引用格式

祖延兵 . Nafion膜表面亲水性研究[J]. 电化学, 1997 , 3(1) : 45 -49 . DOI: 10.61558/2993-074X.3097

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.

参考文献

1EisenbergA,YeagerHL.PerfluorinatedlonomerMembrane.ACSSymp.Ser.180,WashingtonD.C.,19822YeagerHL,SteckA.CationandwaterdifusioninNafionionexchangemembrane:lnfluenceofpolymerstructure.J.Electrochem.Soc.,1981,128:18803FanFRF,BardAJ.STMonwetinsulators:Electrochemistryoftunneling?Science,1995,270:18494BergnerD.Membranecelsforchlor-alkalielectrolysis.J.Appl.Electrochem.,1982,12:6315DharHP.Aunitizedapproachtoregenerativesolidpolymerelectrolytfuelcel.ibid.,1993,23:326ATZawodzinski,GotesfeldS,ShoichetM,MccarthyTJ.Thecomtact-anglebetweenwaterandthesurfaceofperfluorosulphonicacidmembranes.Ibid.,1993,23:867UribeFA,SpringerTE,GottesfeldS.Amicroelectrodestudyofoxygenreductionatplatinum/recast-Nationfilminterface.J.Electrochem.Soc.,1992139:7658AdansonAW著,顾惕人译.表面的物理化学(上).北京:科学出版社,1984:3559祖延兵,查全性.用全氟表面活性剂改善Nafion膜表面的亲水性.应用化学,1995,12(2):3310Weast(editor)RC.CRCHandbookofChemistryandPhysics,63rdedition.BocaRaton,Florida:CRCPresslnc.,1992~199311MorimotoT,SuaukiK,MatsubaraT.Brineelectrolysisusingaperfluorinatedcation-exchangemem-brane(Ⅱ)Performenceofzerogapbrinecelsusingamembranewiththinporousnon-electrodelayers.DenkiKagaku,1992,60:14412YoshidaM,MasudaY,KashiwadaA.GerOfen3003888(1980)13方度,杨维绎主编.全氟离子交换膜-制法、性质和应用.北京:化学工业出版社,1993:115
文章导航

/