Charge trapping and dielectric relaxations of gamma irradiated radiolytically oxidized highly oriented LDPE

被引：11
作者：
Kostoski, D [1 ]
Galovic, S [1 ]
Suljovrujic, E [1 ]
机构：
[1] Inst Nucl Sci Vinca, Lab Radiat Chem, YU-11001 Belgrade, Serbia
来源：
RADIATION PHYSICS AND CHEMISTRY | 2004年 / 69卷 / 03期
关键词：
gamma irradiation; oriented polyethylene; dielectric relaxation; charge trapping; radiolytic oxidation;
D O I：
10.1016/S0969-806X(03)00457-2
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 influence of gamma irradiation in air on the effects of charge trapping in highly oriented LDPE has been studied through dielectric loss (tan delta) analysis in the temperature range from 25 to 325 K and using thermally stimulated discharge current (TSDC) measurements. The radiation induced oxidation was observed using IR spectroscopy. The intensity and the position of the gamma and beta dielectric relaxation maxima were correlated with maxima of TSDC measurements. It was found that the positions of the relaxation peaks are strongly dependent upon the changes in the microstructure of the amorphous phase and on the surface of the crystallites induced by orientation and gamma irradiation. (C) 2003 Elsevier Ltd. All rights reserved.
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收藏
页码：245 / 248
页数：4
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