A governing equation for physical aging of thick and thin fluoropolyimide films

Chun Zhou; Tai Shung Chung; Rong Wang; Suat Hong Goh

doi:10.1002/app.20136

A governing equation for physical aging of thick and thin fluoropolyimide films

Chun Zhou, Tai Shung Chung^*, Rong Wang, Suat Hong Goh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1758-1764
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	92
Issue number	3
DOIs	https://doi.org/10.1002/app.20136
State	Published - May 5 2004
Externally published	Yes

Keywords

Accelerated physical aging
Fluoropolyimide
Glassy polymer
Thin film

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.20136

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title = "A governing equation for physical aging of thick and thin fluoropolyimide films",

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.",

keywords = "Accelerated physical aging, Fluoropolyimide, Glassy polymer, Thin film",

author = "Chun Zhou and Chung, {Tai Shung} and Rong Wang and Goh, {Suat Hong}",

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language = "English (US)",

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T1 - A governing equation for physical aging of thick and thin fluoropolyimide films

AU - Zhou, Chun

AU - Chung, Tai Shung

AU - Wang, Rong

AU - Goh, Suat Hong

PY - 2004/5/5

Y1 - 2004/5/5

N2 - 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.

AB - 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.

KW - Accelerated physical aging

KW - Fluoropolyimide

KW - Glassy polymer

KW - Thin film

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JO - Journal of Applied Polymer Science

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A governing equation for physical aging of thick and thin fluoropolyimide films

Abstract

Keywords

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