Polyaniline Membranes for Separation Applications

Abstract

High quality membranes of poly aniline/ethylaniline copolymers along with polyaniline/polyimide blends have been synthesized. Water permeates preferentially over organic (such as acetic acid) through doped poly aniline due to a combination of favorable diffusion and solubility. Fully doped polyaniline is among the most selective membranes yet developed for water/acetic acid separations: e.g. at 50% water/50% acetic acid the selectivity alpha is > 1,000. Fully doped poly aniline membranes are highly selective effectively blocking species with diameters greater than or equal 4.5 Angstroms. In addition to traditional dopants, ion implantation has been found to be an effective method to produce very highly conductive poly aniline films which exhibit metallic-like behavior.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1997
Accession Number
ADA337806

Entities

People

  • Richard Kaner

Organizations

  • University of California, Los Angeles

Tags

DTIC Thesaurus Topics

  • Acetic Acid
  • Chemical Compounds
  • Chemical Synthesis
  • Chemistry
  • Conjugated Polymers
  • Copolymers
  • Diffusion
  • Electrical Properties
  • Films
  • Ion Implantation
  • Ions
  • Materials
  • Membranes
  • Military Research
  • Polyanilines
  • Polymer Chemistry
  • Polymers

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics