Measurement of CO2 permeability in polymer films

Montgomery M. Alger; William J. Ward

doi:10.1177/875608798700300105

Measurement of CO₂ permeability in polymer films

Montgomery M. Alger, William J. Ward

Chemical Engineering

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

3 Scopus citations

Abstract

A simple and sensitive method for measuring CO₂ permeability in polymer films has been developed. The method is based on the use of ¹⁴CO₂. At time zero ¹⁴CO₂ is injected on the high pressure side of the cell. Permeation is monitored with a Geiger counter which senses ¹⁴CO₂ on the low pressure side of the cell. The counts/time on the low pressure side are proportional to the total concentration of CO₂ which has diffused through the film. With the known source concentration the volume-time curve is constructed and the permeability and time lag are calculated. The system sensitivity as it is presently configured is on the order of 10^-15 em³(STP).cm/cm².sec.cm Hg. Results are presented for a measurement of a 0.025 cm polycarbonate film.

Original language	English (US)
Pages (from-to)	33-40
Number of pages	8
Journal	Journal of Plastic Film & Sheeting
Volume	3
Issue number	1
DOIs	https://doi.org/10.1177/875608798700300105
State	Published - Jan 1987

All Science Journal Classification (ASJC) codes

Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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title = "Measurement of CO2 permeability in polymer films",

abstract = "A simple and sensitive method for measuring CO2 permeability in polymer films has been developed. The method is based on the use of 14CO2. At time zero 14CO2 is injected on the high pressure side of the cell. Permeation is monitored with a Geiger counter which senses 14CO2 on the low pressure side of the cell. The counts/time on the low pressure side are proportional to the total concentration of CO2 which has diffused through the film. With the known source concentration the volume-time curve is constructed and the permeability and time lag are calculated. The system sensitivity as it is presently configured is on the order of 10-15 em3(STP).cm/cm2.sec.cm Hg. Results are presented for a measurement of a 0.025 cm polycarbonate film.",

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AU - Alger, Montgomery M.

AU - Ward, William J.

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AB - A simple and sensitive method for measuring CO2 permeability in polymer films has been developed. The method is based on the use of 14CO2. At time zero 14CO2 is injected on the high pressure side of the cell. Permeation is monitored with a Geiger counter which senses 14CO2 on the low pressure side of the cell. The counts/time on the low pressure side are proportional to the total concentration of CO2 which has diffused through the film. With the known source concentration the volume-time curve is constructed and the permeability and time lag are calculated. The system sensitivity as it is presently configured is on the order of 10-15 em3(STP).cm/cm2.sec.cm Hg. Results are presented for a measurement of a 0.025 cm polycarbonate film.

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Measurement of CO₂ permeability in polymer films

Abstract

All Science Journal Classification (ASJC) codes

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