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首页> 外文期刊>Journal of Applied Polymer Science >Interferometric determination of the birefringence of thermo-tropic polyester fibers and its copolymers of structure (PCPT-co-CPO)
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Interferometric determination of the birefringence of thermo-tropic polyester fibers and its copolymers of structure (PCPT-co-CPO)

机译：干涉测定热塑性聚酯纤维及其结构共聚物（PCPT-co-CPO）的双折射

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摘要

The aim of this study is to determine the optical anisotropy of three different samples of thermo-tropic polyester fibers of structure Poly(chloro-1,4-phenylene terephthalate-co-4,4′-oxybisbenzoate) and its copolymers (PCPT-co-CPO). The molar fraction of disruptor units ([CPO]) ranging from 0.40 to 0.60. The variable wavelength interferometry, VAWI technique, was used to determine the birefringence and spectral dispersion properties of such of these fibers. The Cauchy's dispersion formula and its related constants were determined using the spectral dispersion curves of the birefringence. A mathematical formula was derived for direct measurement of the birefringence profile of highly birefringent polymer fibers using VAWI technique. The effect of varying copolymer molar fractions of the three samples of thermo-tropic polyester fibers was investigated throughout the spectral dispersion curves, the Cauchy's formula constants and the birefringence profiles. Microinterferograms are given for illustration.
机译：这项研究的目的是确定结构聚（氯-1,4-亚苯基对苯二甲酸-co-4,4'-氧代双苯甲酸酯）及其共聚物（PCPT-co）的三种不同热致性聚酯纤维样品的光学各向异性-CPO）。破坏者单元（[CPO]）的摩尔分数为0.40至0.60。可变波长干涉法，VAWI技术，用于确定这些光纤的双折射和光谱色散特性。使用双折射的光谱色散曲线确定柯西色散公式及其相关常数。推导了使用VAWI技术直接测量高度双折射聚合物纤维的双折射曲线的数学公式。在整个光谱色散曲线，柯西公式常数和双折射曲线中研究了三种热塑性聚酯纤维样品的共聚物摩尔分数变化的影响。给出微干涉图用于说明。

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