This article reports a new model approach for the description of light scattering in semicrystalline polymers, to describe more precisely the influence of supermolecular structure on the optical properties. This is the first study in which light scattering of polymer films has been modeled using exact Mie scattering theory of radially anisotropic spheres. As a model material a well‐known polymer, isotactic polypropylene (iPP) was used. Samples were prepared with different sample thicknesses and crystalline structures in order to identify the key parameters of light scattering in polycrystalline polymeric systems. Validation haze measurements were carried out with a spectrophotometer equipped with a 150 mm snap‐in integrating sphere. It was found that the optical properties of the polycrystalline sample can be described using multiple light scattering on these scattering centers. Good agreement was found between the simulated and experimentally measured haze values which proves the reliability and applicability of our new approach.

中文翻译：

---

半结晶聚合物中光散射和雾度的建模

本文报道了一种用于描述半结晶聚合物中光散射的新模型方法，以更精确地描述超分子结构对光学性质的影响。这是首次使用径向各向异性球的精确Mie散射理论对聚合物膜的光散射进行建模的研究。作为模型材料，使用了众所周知的全同立构聚丙烯（iPP）聚合物。为了确定多晶聚合物系统中光散射的关键参数，准备了具有不同样品厚度和晶体结构的样品。验证雾度的测量是使用配备150 mm卡入式积分球的分光光度计进行的。已经发现，可以使用在这些散射中心上的多次光散射来描述多晶样品的光学性质。在模拟和实验测得的雾度值之间找到了很好的一致性，这证明了我们新方法的可靠性和适用性。