Effect of phase condition on the low-temperature radiation-induced degradation of polycarbonate as studied by spectroscopic techniques

被引：12
|
作者：
Orlov, AY
Feldman, VI
机构：
[1] LY Karpov Phys Chem Res Inst, Moscow 103064, Russia
[2] RAS, Inst Synthet Polymer Mat, Moscow 117393, Russia
来源：
POLYMER | 2001年 / 42卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
polycarbonate; radiolysis; crystallinity effect;
D O I：
10.1016/S0032-3861(00)00431-6
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Effect of phase condition (crystallinity) on the low-temperature radiation-induced degradation of polycarbonate was studied by electron spin resonance (ESR) and infrared (IR) spectroscopy. Semi-crystalline polycarbonate exhibits lower relative yields of radiation-induced degradation in comparison with amorphous polycarbonate, as evidenced by monitoring of both CO and CO2 formation (IR spectroscopy), and radical pair formation (ESR spectroscopy). On the basis of results obtained, the mechanism of electron stabilisation in polycarbonate, and reasons of variation in radical pair inter-spin distance are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码：1987 / 1993
页数：7
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