Please use this identifier to cite or link to this item:
Title: A governing equation for physical aging of thick and thin fluoropolyimide films
Authors: Zhou, C.
Chung, T.-S. 
Wang, R.
Goh, S.H. 
Keywords: Accelerated physical aging
Glassy polymer
Thin film
Issue Date: 5-May-2004
Citation: Zhou, C., Chung, T.-S., Wang, R., Goh, S.H. (2004-05-05). A governing equation for physical aging of thick and thin fluoropolyimide films. Journal of Applied Polymer Science 92 (3) : 1758-1764. ScholarBank@NUS Repository.
Abstract: An equation based on the segmental/chain mobility in free volume theory was derived to correlate the gas permeation coefficient and the aging time. An accelerated physical aging of a fluoropolyimide was observed and employed to validate this equation. A strong thickness-dependent aging process was found by employing pure O2 and N2 tests to monitor the change of gas permeation properties as a function of aging time. Experimental results also suggest that chain rigidity and configuration play important roles in physical aging. As a result, the thin 2,2′-bis(3,4′-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA) based polyimide films studied here have different permeability versus time relationship from conventional polyarylate in the early stage of aging, and the experimental data seem to fit the proposed equation well. © 2004 Wiley Periodicals, Inc.
Source Title: Journal of Applied Polymer Science
ISSN: 00218995
DOI: 10.1002/app.20136
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Apr 16, 2021


checked on Apr 8, 2021

Page view(s)

checked on Apr 12, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.