高聚物球晶偏光织态研究中的厚度性消光与补偿机理

Depth-Induced Light Extinction and Compensation Mechanism in Polymer Spherulites under a Polarizing Optical Microscope

以两维聚环氧乙烷（ＰＥＯ）球晶为对象，探讨了偏光显微法的消光机理，尤其是其中的厚度性消光机理，并对于补偿片的作用原理作了细致的理论分析。运用上述手段对ＰＥＯ球晶的形态进行了研究。

This paper investigates extinction mechanisms about polarized optical microscopy(POM),which are classified into isotropic extinction,pseudo-isotropic extinction,general anisotropic extinction and depth-induced light extinction(DILE).Emphasis is made on the analysis of DILE and of the compensation mechanism especially.With this method,the bulk spherulite of poly(ethylene oxide) is studied and the anisotropic factor is measured.