Aging of Polyimides in High Temperature Environments

Membranes made of high permeable fluorinated aromatic polyimide synthesized from 6FDA (4,4'‐hexafluoroisopropylidene diphthalic anhydride) and 4MPD (2,3,5,6‐tetramethyl‐1,4‐phenylene diamine) have been thermally treated to examine their aging behaviour at high temperature. The aging process was...

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Bibliographic Details
Published in:	Macromolecular symposia. Vol. 287; no. 1; pp. 95 - 100
Main Authors:	Wieneke, Jan U., Staudt, Claudia
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 01-01-2010 WILEY‐VCH Verlag
Subjects:	aging Anhydrides Degradation Fluorination gas permeation High temperature environments membranes Polyimide resins polyimides Separation Spectra Thermogravimetric analysis
Online Access:	Get full text
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Summary:	Membranes made of high permeable fluorinated aromatic polyimide synthesized from 6FDA (4,4'‐hexafluoroisopropylidene diphthalic anhydride) and 4MPD (2,3,5,6‐tetramethyl‐1,4‐phenylene diamine) have been thermally treated to examine their aging behaviour at high temperature. The aging process was investigated by means of gas permeation tests, IR spectroscopy and thermogravimetric analysis combined with mass spectral analysis of the gaseous decomposition products. Up to around 400 °C thin films of the material show no major degradation but changes in color, flexibility and separation characteristics for O2/N2 were observed.
Bibliography:	Arbeitsgemeinschaft industrieller Forschungsvereinigungen (AiF) - No. 222 ZN istex:B76B337EECE3634403C70E0B652E265CF5B49C47 ark:/67375/WNG-MT69G2HG-B ArticleID:MASY201050113 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	1022-1360 1521-3900
DOI:	10.1002/masy.201050113