Effect of ionizing radiation on physicochemical and mechanical properties of commercial multilayer coextruded flexible plastics packaging materials

被引：44
|
作者：
Goulas, AE [1 ]
Riganakos, KA
Kontominas, MG
机构：
[1] Univ Ioannina, Dept Mat Sci & Technol, GR-45110 Ioannina, Greece
[2] Univ Ioannina, Dept Chem, Food Chem & Technol Lab, GR-45110 Ioannina, Greece
来源：
RADIATION PHYSICS AND CHEMISTRY | 2003年 / 68卷 / 05期
关键词：
multilayer packaging materials; physicochemical properties; gamma radiation;
D O I：
10.1016/S0969-806X(03)00298-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of gamma radiation (doses: 5, 10 and 30 kGy) on mechanical properties, gas and water vapour permeability and overall migration values into distilled water, 3% aqueous acetic acid and iso-octane was studied for a series of commercial multilayer flexible packaging materials based on coextruded polypropylene (PP), ethylene vinyl alcohol (EVOH), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA) and Ionomer. The results showed that radiation doses of 5 and 10 kGy induced no statistically significant differences (p > 0.05) in all polymer properties examined. A dose of 30 kGy induced differences (p < 0.05) in the mechanical properties of PA/LDPE, LDPE/EVOH/LDPE and LDPE/PA/Ionomer films. In addition, the same dose induced differences (p < 0.05) in the overall migration from lonomer/EVOH/LDPE and LDPE/PA/Ionomer films into 3% acetic acid and iso-octane and in the overall migration from PP/EVOH/LDPE-LLDPE into iso-octane. Differences recorded, are discussed in relation to food irradiation applications of respective packaging materials. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：865 / 872
页数：8
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