Effect of mechanical treatments on orientation behavior and spectral properties of azoderivative dyes incorporated in poly(vinyl alcohol) films,Polymer Engineering and Science

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Effect of mechanical treatments on orientation behavior and spectral properties of azoderivative dyes incorporated in poly(vinyl alcohol) films
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-08-05 , DOI: 10.1002/pen.25771
Raluca Marinica Albu ₁ , Iuliana Stoica ₁ , Andreea Irina Barzic ₁ , Mihai Postolache ₂ , Mihai‐Daniel Angheluta ₃ , Dana Ortansa Dorohoi ₄

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Various azoderivative dyes were incorporated in uncolored poly(vinyl alcohol) (PVOH). One type of film was obtained by drying the layer of solution cast on glass plate. The other type was obtained by rubbing the PVOH layer before complete drying. Linear birefringence and dichroism of dyed polymer films were investigated as a function of stretching degree. An increase in the linear birefringence was found with increasing stretching degree for both uncolored and colored films. Dichroism of the PVOH films depends on the dye chemical structure and also on the stretching degree of both non-rubbed and rubbed and dyed PVOH samples. Molecular modeling was used to examine interactions occurring between PVOH and the embedded dye molecule. These stretching degree dependencies were approximated mathematically, which was used to describe the behavior of some components of interference filters.

中文翻译：

机械处理对掺入聚乙烯醇薄膜的偶氮衍生物染料的取向行为和光谱特性的影响

将各种偶氮衍生物染料掺入未着色的聚乙烯醇 (PVOH) 中。通过干燥浇铸在玻璃板上的溶液层获得一种类型的膜。另一种类型是在完全干燥之前通过摩擦 PVOH 层获得的。研究了染色聚合物薄膜的线性双折射和二色性作为拉伸度的函数。对于未着色和着色的薄膜，发现线性双折射随着拉伸程度的增加而增加。PVOH 薄膜的二色性取决于染料的化学结构，还取决于未摩擦、摩擦和染色 PVOH 样品的拉伸程度。分子建模用于检查 PVOH 和嵌入的染料分子之间发生的相互作用。这些拉伸度依赖性在数学上近似，

更新日期：2021-10-01

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