Ion-Transporting Composite Membranes. 3. Selectivity and Rate of Ion Transport in Nafion- (trade name) Impregnated Gore-Tex Membranes Prepared by a High Temperature Solution-Casting Method

Abstract

In a previous paper we discussed the rate of ion-transport in Nafion Impregnated Gore-Tex (NIGT) membranes. The membranes described in this previous paper were prepared by immersing the Gore-Tex in a solution of Nafion and then allowing the solvent to evaporate at room temperature. Nafion films which are cast at room temperature show poor mechanical and transport properties. This paper describes the transport properties of NIGT membranes prepared via a high temperature solution-casting method. We have found that these high temperature- cast NIGT membranes show better physical and mechanical properties than the low temperature-cast NIGT investigated previously. The two diffusion-pathway mode, described in the previous paper, quantitatively accounts for the transport data for the high temperature-cast membranes. Subject terms: Composite membranes, Nafion/Gore-Tex, Ion-transport.

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Document Details

Document Type
Technical Report
Publication Date
Aug 02, 1990
Accession Number
ADA225837

Entities

People

  • Chao Liu
  • Charles R. Martin

Organizations

  • Colorado State University

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DTIC Thesaurus Topics

  • Cells
  • Chemistry
  • Classification
  • Composite Materials
  • Contrast
  • Diameters
  • Diffusion Coefficient
  • Electrochemical Cells
  • Electrodes
  • Experimental Data
  • High Temperature
  • Low Temperature
  • Materials
  • Mechanical Properties
  • Photoelectrochemical Cells
  • Transport Properties
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Fields of Study

  • Materials science

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  • Polymer Science and Engineering.
  • Underwater engineering and Marine Technology.