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首页> 外文期刊>Fibres & textiles in Eastern Europe >Evaluation of the Sorption Phenomena Mechanism of Polyacrylonitrile Fibres for Selected Dyes in the Aspect of Structural Changes Resulting from Thermal Stabilisation Processes
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Evaluation of the Sorption Phenomena Mechanism of Polyacrylonitrile Fibres for Selected Dyes in the Aspect of Structural Changes Resulting from Thermal Stabilisation Processes

机译：热稳定工艺引起的结构变化方面中聚丙烯腈纤维对选定染料的吸附现象机理的评价

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摘要

The aim of the research was to analyse the influence of the initial heat treatment of polyacrylonitrile fibres on their sorption properties in relation to selected basic and disperse dyes, in order to select the dyeing variants most beneficial from the point of view of increasing the sorption capacity of commonly used dyes and improving the dyeing process. Research was carried out on a fibre produced on an industrial scale, using dyes of basic application importance, which differ in the diffusion properties of the molecules and the mechanism of binding with the fibre material. Thermal treatment of the fibre was carried out in various media (air; water; steam), with various variants of the temperature and its duration, i.e. under the conditions commonly used in fibre preprocessing processes and their "improvement". During the research, several different measurement methods were used to assess changes in the molecular and supramolecular structure of the fibre material: the infrared absorption spectroscopy method, the critical fibre dissolution measurement method, the densitometric method, and the interferential polarisation microscopy method. Fibre sorption changes resulting from the modification of the structure of the fibre under the influence of thermal treatment were analysed from the point of view of improving the efficiency of dye use and shortening the dyeing time based on commonly accepted values of the sorption index C-b and kinetic sorption index: t(0.5) for basic dyes and t(0.7) for disperse dyes.
机译：该研究的目的是分析聚丙烯腈纤维的初始热处理对与选定的碱性和分散染料的吸附性能的影响，以便从增加吸附能力的观点来看最有利的染色变体常用染料和改善染色过程。在工业规模生产的纤维上进行了研究，使用基本应用重要性的染料，其在分子的扩散特性和与纤维材料结合的机理方面不同。纤维的热处理在各种介质（空气;水;蒸汽）中进行，温度的各种变体及其持续时间，即在纤维预处理过程中常用的条件下及其“改进”。在研究期间，几种不同的测量方法用于评估纤维材料的分子和超分子结构的变化：红外吸收光谱法，临界纤维溶解测量方法，密度测量法和干涉偏振显微镜方法。从改善染料使用效率和基于常见的吸附指数CB和动力学的常见值缩短染色时间，从热处理的影响下改变纤维结构的变化导致的纤维吸附变化。吸附指数：用于分散染料的碱性染料的T（0.5）和T（0.7）。

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