【摘 要】
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In this work,low density polyethylene film (PE-LD) samples (75 m thickness),used for food packaging,have been investigated.Prior to the measurement,samples
【机 构】
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University of Rijeka, School of Medicine, Rijeka 51000,CROATIA
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In this work,low density polyethylene film (PE-LD) samples (75 m thickness),used for food packaging,have been investigated.Prior to the measurement,samples were exposed to the ethanol model solution for a different period of time at different temperatures.The impact of the model solution,which represents a simulant of an alcoholic beverage,on the thermal (glass transition temperatures,melting points,degree of crystallinity) and barrier (water vapour transmission rate,WVTR)behaviour of PE-LD samples is investigated.The results have shown that the period of 2 days exposure is not sufficient to generate measurable changes in the thermal behaviour of polyethylene films,regardless of the exposure temperature.
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