Temperature effects on permeation of modified atmosphere gas mixtures through a low density polyethylene package film

✍ Scribed by Kamil Tokatli; Mustafa Özilgen

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 351 KB
• Volume: 30
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/pi.4990300116

✦ Synopsis

Abstract

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.