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Effect of Chemical Composition on Gas Transport Properties of Ethylene-based Ionomers

โœ Scribed by Del Nobile, Matteo A.; Mensitieri, Giuseppe; Nicolais, Luigi


Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
473 KB
Volume
41
Category
Article
ISSN
0959-8103

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โœฆ Synopsis


Transport properties of oxygen and carbon dioxide in three ethyleneacrylic acid ionomers, characterized by different amounts of acrylic acid groups, percentage of neutralization and counterion type, have been investigated. Gas permeation experiments have been performed in the 25-65ยฐC range. Gas permeabilities, diffusivities and solubilities were evaluated along with activation energies and heats of solution. The transport properties have been analysed in order to correlate the effect of counterion type and its concentration on macromolecular mobility and on polymer-gas interaction, which in turn are the factors determining permeation rate.


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