Preparation and characterization of cross-linked Matrimid membranes for CO sub(2)/CH sub(4) separation

For preventing plasticization phenomenon, cross-linked Matrimid membranes were prepared. Matrimid membranes were immersed in a solution of 10% (w/v) ethylenediamine or hexamethylenediamine in methanol for preparation of cross-linked membranes. Using a gas separation membrane unit, permeability prope...

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Published inPolymer science. Series B Vol. 56; no. 5; pp. 650 - 656
Main Authors Rahmani, M R, Kazemi, A, Talebnia, F, Khanbabaei, G
Format Journal Article
LanguageEnglish
Published 01.09.2014
Subjects
Carbon dioxide
Crosslinking
Fourier transforms
Infrared spectroscopy
Membranes
Methyl alcohol
Permeability
Separation
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Summary:For preventing plasticization phenomenon, cross-linked Matrimid membranes were prepared. Matrimid membranes were immersed in a solution of 10% (w/v) ethylenediamine or hexamethylenediamine in methanol for preparation of cross-linked membranes. Using a gas separation membrane unit, permeability properties of pristine and modified membranes for pure gases (CO sub(2) and CH sub(4)) were investigated. CO sub(2) plasticization effect on permeability properties of the membranes is discussed. Modified membranes indicated smaller values of tensile strength than pristine membranes. Thermal gravimetric analysis showed that thermal resistance of modified membranes increased in a limited temperature range. In general, modified membranes were thermally stable for separation applications. Formation of amide groups in modified membranes was investigated by Fourier transform infrared spectroscopy analysis.
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ISSN:1560-0904
1555-6123
DOI:10.1134/S1560090414050108