聚甲醛
各向异性
色散(光学)
反射(计算机编程)
谱线
垂直的
材料科学
红外线的
红外光谱学
光学
分子物理学
分析化学(期刊)
化学
物理
复合材料
聚合物
几何学
数学
有机化学
天文
计算机科学
程序设计语言
色谱法
标识
DOI:10.1177/00037028231217005
摘要
Injection-molded polyoxymethylene (POM) has molecular chains mainly oriented in the injection direction. We investigated the directional dependence of the polarized infrared reflection and attenuated total reflection spectra by rotating the anisotropic POM sample. Because of the strong absorption and large frequency dispersion of the C–O vibration in the main-chain direction, we found phenomena such as shoulder wing generation that resulted from the mixing of optical responses attributed to the vibration in the main chain and that in the direction perpendicular to the main chain. The spectra of the directional dependence can be explained qualitatively because of the anisotropy of the mode with large frequency dispersion.
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