Electron beam irradiation effects on poly(ethylene terephthalate)

被引：17
|
作者：
Burillo, G.
Tenorio, L.
Bucio, E.
Adem, E.
Lopez, G. P.
机构：
[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Dept Quim Radiac & Radioquim, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Fis, Dept Fis Expt, Mexico City 04510, DF, Mexico
[3] Univ New Mexico, Dept Chem & Nucl Engn, Ctr Biomed Engn, Albuquerque, NM 87131 USA
来源：
RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 11-12期
关键词：
electron beam; poly(ethylene terephthalate); irradiation effects; polymer irradiation;
D O I：
10.1016/j.radphyschem.2007.02.097
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：
Changes in poly(ethylene terephthalate) subjected to electron beam irradiation at doses up to 15 MGy and dose rate of 1.65 MGy/h, were investigated by differential scanning calorimetry, molecular weight measurement, X-ray photoelectron spectroscopy, and scanning electron microscopy. Irradiated samples showed a decrease of molecular weight with a minimum at 5 MGy, which is attributed to chain scission of the macromolecules and then an increase at further doses due to branching and some degradation effect. Irradiation in air is not an important factor because the high dose rate of irradiation inhibits oxygen diffusion in the samples. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1728 / 1731
页数：4
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