Physical aging and refractive index of poly(methyl methacrylate) glass

被引：29
|
作者：
Tanio, Norihisa [1 ]
Nakanishi, Teruaki [1 ]
机构：
[1] Chitose Inst Sci & Technol, Fac Photon Sci & Technol, Chitose 0668655, Japan
来源：
POLYMER JOURNAL | 2006年 / 38卷 / 08期
关键词：
polymer glass; physical aging; refractive index; prism coupling; volume relaxation; glass transition temperature; poly(methyl methacrylate);
D O I：
10.1295/polymj.PJ2005192
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Physical aging of poly(methyl methacrylate) (PMMA) glass was studied by refractive index measurement. We measured change of refractive index of PMMA glass with annealing at temperatures below the glass transition temperature (T-g) by optical prism coupling, and determined volume relaxation by physical aging using the Lorentz-Lorenz equation. In this paper, the effect of aging temperature on volume relaxation of PMMA glass was investigated. Maximum volume relaxation for PMMA glass was determined at 18 degrees C below the T-g.
引用
收藏
页码：814 / 818
页数：5
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