Physical Aging and Light Scattering of Low-Loss Poly(methyl methacrylate) Glass

被引：0
|
作者：
Norihisa Tanio
Hisao Kato
Yasuhiro Koike
Harvey E Bair
Shiro Matsuoka
Lee L Blyler
机构：
[1] Kanagawa Academy of Science and Technology,Faculty of Science and Technology
[2] Keio University,undefined
[3] Bell Laboratories,undefined
来源：
Polymer Journal | 1998年 / 30卷
关键词：
Physical Aging; Light Scattering Loss; Poly(methyl methacrylate); Glass Transition Temperature; Enthalpy Relaxation; Amorphous Polymer; Polymer Glass;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Isothermal aging has been carried out on low-loss poly(methyl methacrylate) (PMMA) glass at 18°C below the glass transition temperature (Tg). The effect of enthalpy relaxation on light scattering loss of PMMA glass which had no excess scattering was investigated by the use of differential scanning calorimeter (DSC) and light scattering measurement. The light scattering intensity of PMMA glass did not increase with increasing aging time. It is seen that the light scattering loss of glassy PMMA is not affected inherently by physical aging as a result of its approach to thermodynamic equilibrium at a temperature 18°C below its Tg.
引用
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页码：56 / 59
页数：3
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