Low-energy excitations in stressed poly(methyl methacrylate)

被引:0
|
作者
Kober, K [1 ]
Tshmel, A [1 ]
机构
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, Fracture Phys Dept, St Petersburg 194021, Russia
关键词
low-frequency Raman spectroscopy; PMMA; stress-induced transformation; orientation;
D O I
10.1002/(SICI)1099-0488(20000501)38:93.0.CO;2-X
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Raman study of flexure stressed poly(methyl methacrylate) (PMMA) plates at the frequency range of libration mode (80 cm(-1)), boson peak (14 cm(-1)), and quasi-elastic light scattering (QLS) (below 20 cm(-1)) is presented. The reversible changes in the vicinity of the Rayleigh line were attributed to partial disturbance of the midrange order due to stress-induced redistribution of random fluctuations of orientation. (C) 2000 John Wiley & Sons, Inc.
引用
收藏
页码:1133 / 1136
页数:4
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