Effects of gamma radiation on commercial food packaging films - study of changes in UV/VIS spectra

被引：41
|
作者：
Moura, EAB
Ortiz, AV
Wiebeck, H
Paula, ABA
Silva, ALA
Silva, LGA
机构：
[1] Ctr Tecnol Radiacoes, Inst Pesquisas Energetricas & Nucl, BR-05508000 Sao Paulo, Brazil
[2] Unipac Embalagens Ltda, Sao Paulo, Brazil
[3] Univ Sao Paulo, Dept Engn Met & Mat, BR-05508 Sao Paulo, Brazil
来源：
RADIATION PHYSICS AND CHEMISTRY | 2004年 / 71卷 / 1-2期
关键词：
gamma radiation; Polymer film transmittance; Polymer film absorbance;
D O I：
10.1016/j.radphyschem.2004.05.034
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 doses up to 100 kGy on the optical properties of different commercial packaging films were studied in this paper. The packaging films analyzed were: polyethylene "LDPE", amide 6-amide 6.6 copolymer "PA6-PA6.6" and poly(ethylene terephthalate) "PET". An investigation on film samples before and after irradiation was performed by UV/VIS spectroscopy. The results showed that, in the absorption spectra of irradiated LDPE and PA6-PA6.6 films, a red-shift in the wavelength of the UV cutoff and a marked reduction in % transmittance (at low wavelengths) occur with increasing radiation dose. With respect to PET samples, no significant changes were observed in either light absorption or transmittance. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：201 / 204
页数：4
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