PROBE SPECTROSCOPY, FREE-VOLUME CONCEPTS, AND PHYSICAL AGING OF POLYMER GLASSES

被引：0
作者：
KLUIN, JE [1 ]
MOADDEL, H [1 ]
RUAN, MY [1 ]
YU, Z [1 ]
JAMIESON, AM [1 ]
SIMHA, R [1 ]
MCGERVEY, JD [1 ]
机构：
[1] CASE WESTERN RESERVE UNIV, DEPT MACROMOLEC SCI, CLEVELAND, OH 44106 USA
来源：
ADVANCES IN CHEMISTRY SERIES | 1993年 / 236期
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D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Many properties of polymeric materials can be interpreted by using the free volume concept. Our particular efforts in this area have utilized the Simha-Somcynsky theory, which enables the computation of a free volume function from the experimental equation-of-state of the polymer. In recent years several groups have investigated the possibility of applying spectroscopic techniques as a direct probe of the structural disorder (free volume) in polymers. We review these efforts, which include fluorescence spectroscopy, electron spin resonance spectroscopy, and positron annihilation lifetime (PAL) measurements. We describe in detail the application of PAL analysis to investigate free volume changes in situ in bisphenol A polycarbonate subjected to mechanical deformation.
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页码：535 / 555
页数：21
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