Effect of thermal annealing on the gas permeability of HIQ-40 films

J. Y. Park; D. R. Paul; I. Haider; M. Jaffe

doi:10.1002/(SICI)1099-0488(19960730)34:10<1741::AID-POLB4>3.0.CO;2-T

Effect of thermal annealing on the gas permeability of HIQ-40 films

J. Y. Park, D. R. Paul, I. Haider, M. Jaffe

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

16 Scopus citations

Abstract

The copolyester formed from 40 mol% p-hydroxybenzoic acid (H), 30 mol% isophthalic acid (I), and 30 mol% hydroquinone (Q), designated as HIQ-40, forms isotropic, amorphous films when appropriately cast from a solvent. Thermal annealing leads to a mesogenic texture and some level of crystallinity. It is shown that these ordering processes lead to dramatic reductions in gas permeability; the magnitude of the decrease increases with the size of the penetrant. The current results are consistent with previously reported sorption data for acetone in HIQ-40.

Original language	English (US)
Pages (from-to)	1741-1745
Number of pages	5
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	34
Issue number	10
DOIs	https://doi.org/10.1002/(SICI)1099-0488(19960730)34:10<1741::AID-POLB4>3.0.CO;2-T
State	Published - Jul 30 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Materials Chemistry

Keywords

Annealing
Crystallinity
Gases
Liquid crystalline polymer
Permeability

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10.1002/(SICI)1099-0488(19960730)34:10<1741::AID-POLB4>3.0.CO;2-T

Cite this

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title = "Effect of thermal annealing on the gas permeability of HIQ-40 films",

abstract = "The copolyester formed from 40 mol% p-hydroxybenzoic acid (H), 30 mol% isophthalic acid (I), and 30 mol% hydroquinone (Q), designated as HIQ-40, forms isotropic, amorphous films when appropriately cast from a solvent. Thermal annealing leads to a mesogenic texture and some level of crystallinity. It is shown that these ordering processes lead to dramatic reductions in gas permeability; the magnitude of the decrease increases with the size of the penetrant. The current results are consistent with previously reported sorption data for acetone in HIQ-40.",

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AU - Park, J. Y.

AU - Paul, D. R.

AU - Haider, I.

AU - Jaffe, M.

PY - 1996/7/30

Y1 - 1996/7/30

N2 - The copolyester formed from 40 mol% p-hydroxybenzoic acid (H), 30 mol% isophthalic acid (I), and 30 mol% hydroquinone (Q), designated as HIQ-40, forms isotropic, amorphous films when appropriately cast from a solvent. Thermal annealing leads to a mesogenic texture and some level of crystallinity. It is shown that these ordering processes lead to dramatic reductions in gas permeability; the magnitude of the decrease increases with the size of the penetrant. The current results are consistent with previously reported sorption data for acetone in HIQ-40.

AB - The copolyester formed from 40 mol% p-hydroxybenzoic acid (H), 30 mol% isophthalic acid (I), and 30 mol% hydroquinone (Q), designated as HIQ-40, forms isotropic, amorphous films when appropriately cast from a solvent. Thermal annealing leads to a mesogenic texture and some level of crystallinity. It is shown that these ordering processes lead to dramatic reductions in gas permeability; the magnitude of the decrease increases with the size of the penetrant. The current results are consistent with previously reported sorption data for acetone in HIQ-40.

KW - Annealing

KW - Crystallinity

KW - Gases

KW - Liquid crystalline polymer

KW - Permeability

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IS - 10

ER -

Effect of thermal annealing on the gas permeability of HIQ-40 films

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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