论文部分内容阅读
应用紫外－可见光区的椭圆偏振光谱（ＳＥ）方法测定了非晶态高聚物ＰＭＭＡ和ＰＣ的固体光学性质，并由无膜体系统理论模型计算求得薄膜材料的折射率谱，确定在所用波长范围内ＰＭＭＡ和ＰＣ的ｎ值分别为１．３２－１．５３和１．４１－１．９４。研究表明非晶态高聚物的大分子链（段）化学组成和结构不同，使薄膜材料具有不同的折射率变化，产生不同的光学色散现象。
The solid optical properties of amorphous polymers PMMA and PC were measured by ellipsometry (SE) method in the UV-Vis range. The refractive index spectra of the thin films were calculated from the theoretical model without film body system. The n values of PMMA and PC in the wavelength range are 1.32-1.53 and 1.41-1.94, respectively. The results show that the macromolecular chains (segments) of amorphous polymers have different chemical compositions and structures, which lead to different refractive index changes and different optical dispersion phenomena.