Please use this identifier to cite or link to this item: https://doi.org/10.1002/app.20136
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dc.titleA governing equation for physical aging of thick and thin fluoropolyimide films
dc.contributor.authorZhou, C.
dc.contributor.authorChung, T.-S.
dc.contributor.authorWang, R.
dc.contributor.authorGoh, S.H.
dc.date.accessioned2014-10-09T06:42:27Z
dc.date.available2014-10-09T06:42:27Z
dc.date.issued2004-05-05
dc.identifier.citationZhou, 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. https://doi.org/10.1002/app.20136
dc.identifier.issn00218995
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/88449
dc.description.abstractAn 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.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/app.20136
dc.sourceScopus
dc.subjectAccelerated physical aging
dc.subjectFluoropolyimide
dc.subjectGlassy polymer
dc.subjectThin film
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1002/app.20136
dc.description.sourcetitleJournal of Applied Polymer Science
dc.description.volume92
dc.description.issue3
dc.description.page1758-1764
dc.description.codenJAPNA
dc.identifier.isiut000220435000054
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