The effects of irradiation on physicochemical characteristics of PET packaging film

被引：44

作者：

Jeon, DH

Lee, KH

Park, HJ

机构：

[1] Korea Univ, Grad Sch Biotechnol, Seoul 136701, South Korea

[2] KFDA, Food Packaging Div, Seoul 122704, South Korea

[3] Clemson Univ, Dept Packaging Sci, Clemson, SC 29634 USA

来源：

RADIATION PHYSICS AND CHEMISTRY | 2004年 / 71卷 / 05期

关键词：

irradiation; poly(ethylene terephthalate); PET; physicochemical characteristics;

D O I：

10.1016/j.radphyschem.2003.10.009

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 effects of gamma-irradiation on physicochemical characteristics of biaxially stretched poly(ethylene terephthalate) (PET) packaging film were investigated in the range of 0-200 kGy. The diethylene glycol (DEG) contents in PET chains were increased at the low doses, 5 and 10 kGy, while these values were decreased at high doses, in the range of 30-200 kGy. Molecular weights, intrinsic viscosity and carboxy end group contents decreased slightly after 60 kGy dose. Permeability, thermal properties, color, haze and surface resistivity on gamma-irradiation of oriented PET films were not significantly affected. Although some of the effects were measurable, they have no significance with respect to the use of PET for packaging of foods or medical devices to be irradiated. (C) 2003 Published by Elsevier Ltd.

引用

页码：1059 / 1064

页数：6

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