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Title: Permeable polyaniline articles for gas separation

Abstract

Immersion precipitation of solutions having 15%-30% (w/w) and various molecular weights of the emeraldine base form of polyaniline in polar aprotic solvents are shown to form integrally skinned asymmetric membranes and fibers having skin layers <1 .mu.m thick which exhibit improved rates of gas transport while preserving good selectivity. These membranes can be further transformed by an acid doping process after fabrication to achieve excellent permeation rates and high selectivities for particular gas separations. Prior to the use of concentrated EB solutions, the formation of integrally skinned asymmetric membranes was not possible, since films and fibers made from <5% w/w polyaniline solutions were found to disintegrate during the IP process.

Inventors:
;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175057
Patent Number(s):
6797325
Application Number:
09/792,514
Assignee:
University Of California, The Regents Of
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
D - TEXTILES D01 - NATURAL OR MAN-MADE THREADS OR FIBRES D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Wang, Hsing-Lin, and Mattes, Benjamin R. Permeable polyaniline articles for gas separation. United States: N. p., 2004. Web.
Wang, Hsing-Lin, & Mattes, Benjamin R. Permeable polyaniline articles for gas separation. United States.
Wang, Hsing-Lin, and Mattes, Benjamin R. Tue . "Permeable polyaniline articles for gas separation". United States. https://www.osti.gov/servlets/purl/1175057.
@article{osti_1175057,
title = {Permeable polyaniline articles for gas separation},
author = {Wang, Hsing-Lin and Mattes, Benjamin R.},
abstractNote = {Immersion precipitation of solutions having 15%-30% (w/w) and various molecular weights of the emeraldine base form of polyaniline in polar aprotic solvents are shown to form integrally skinned asymmetric membranes and fibers having skin layers <1 .mu.m thick which exhibit improved rates of gas transport while preserving good selectivity. These membranes can be further transformed by an acid doping process after fabrication to achieve excellent permeation rates and high selectivities for particular gas separations. Prior to the use of concentrated EB solutions, the formation of integrally skinned asymmetric membranes was not possible, since films and fibers made from <5% w/w polyaniline solutions were found to disintegrate during the IP process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {9}
}

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Works referenced in this record:

Polyaniline: Dependency of selected properties on molecular weight
journal, March 1993


Conjugated Polymer Films for Gas Separations
journal, June 1991


Investigation of the gas-transport properties of polyaniline
journal, May 1994


Effect of doping treatment on gas transport properties and on separation factors of polyaniline memebranes
journal, September 1995


Composite hollow fiber membranes for gas separation: the resistance model approach
journal, January 1981


Thermoreversible Gels of Polyaniline:  Viscoelastic and Electrical Evidence on Fusible Network Structures
journal, July 1997