engleski

The effect of liquid absorption on gas barrier properties of triplex film coated with silicon oxide

Polymeric triplex film with SiOx deposit (poly(ethylene-terephtalate/poly(ethylene-terephtalate+SiOx/polyethylene) was analysed for its gas permeance characteristics. For this purpose the permeance of triplex film to oxygen, nitrogen and carbon dioxide was analysed before and after the immersion into test solutions (ethanol, acetic acid and distilled water). Gas permeance measurements were performed in temperature range from 20 to 60 oC. The permeability of the treated triplex film (181-241 cm3 m-2 d-1 bar-1) showed negligible changes in comparison to the untreated ones (164-257 cm3 m-2 d-1 bar-1). Due to inflection point existence at 40 oC, the Arrhenius equation was applied in narrow temperature ranges (from 20 to 35 oC and from 40 to 60 oC). The obtained activation energies for the permeance of gases was correlated with different physical characteristics of permeates.

barrier properties; SiOx; temperature; test solutions; triplex film

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