Effect of electron irradiation on polytetrafluoro ethylene

被引：37
作者：
Mishra, R
Tripathy, SP
Dwivedi, KK
Khathing, DT
Ghosh, S
Müller, M
Fink, D
机构：
[1] Arunachal Univ, Itanagar 791111, Arunachal Prade, India
[2] NE Hill Univ, Dept Phys, Shillong 793022, Meghalaya, India
[3] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
来源：
RADIATION MEASUREMENTS | 2003年 / 37卷 / 03期
关键词：
polytetrafluoro ethylene; electron irradiation; absorbance; free radicals; thermal stability; melting point; crystallisation;
D O I：
10.1016/S1350-4487(02)00183-X
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The present work looks into the property changes of polytetrafluoro ethylene as a reaction to 23 kGy dose of 2 MeV electron irradiation. A systematic investigation of modification in physico-chemical properties of the polymer by electron irradiation has been carried out by different characterisation techniques viz. fourier transform IR spectroscopy, electron spin resonance spectroscopy, thermogravimetric analysis, differential scanning calorimetry and X-ray diffraction analysis. The electron irradiation induced chain scission in the polymer, which resulted in the appearance of some new absorbance bands in the IR region, the formation of relatively stable free radical, decrease in melting point, reduction in thermal stability and decrease in crystallinity of the polymer. (C) 2003 Elsevier Science Ltd. All rights reserved.
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页码：247 / 251
页数：5
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