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Temperature effects on permeation of modified atmosphere gas mixtures through a low density polyethylene package film
Author(s) -
Tokatli Kamil,
Özilgen Mustafa
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990300116
Subject(s) - activation energy , carbon dioxide , permeation , arrhenius equation , polyethylene , atmospheric temperature range , diffusion , oxygen , materials science , gaseous diffusion , analytical chemistry (journal) , fick's laws of diffusion , thermodynamics , chemistry , organic chemistry , composite material , membrane , biochemistry , physics , electrode
Permeation of CO 2 and O 2 through a low density polyethylene film was studied with CO 2 ‐N 2 mixtures in the temperature range 263‐283 K, and with CO 2 ‐O 2 ‐N 2 mixtures in the range 257‐313 K. The temperature dependence of the permeabilities of these gases agreed with the Arrhenius expression. The activation energy for carbon dioxide diffusion was between 3.53 × 10 4 and 3.74 × 10 4 J/mol; the activation energy for oxygen diffusion was 3.13 × 10 4 J/mol. The pre‐exponential constant for oxygen was higher than that of carbon dioxide in various mixtures. It was also found that the pre‐exponential constant of carbon dioxide decreased with increasing CO 2 concentration in the mixtures.