ИССЛЕДОВАНИЕ СТРУКТУРНОЙ ТРАНСФОРМАЦИИ РЕГЕНЕРИРОВАННОГО ХЛОПКА МЕТОДОМ ИК-СПЕКТРОСКОПИИ КАК ИНСТРУМЕНТ ОЦЕНКИ ЦИКЛИЧЕСКОГО ИСПОЛЬЗОВАНИЯ ТЕКСТИЛЬНЫХ РЕСУРСОВ

Abstract

Abstract. The study addresses the raw material by incorporating textile waste into production. The research objective is to establish the patterns of cotton structure transformation at stages of mechanical regeneration. The relevance of the work is driven by the need for scientific support of the first textile deep processing projects in Kazakhstan (e.g., “Glovex” LLP, Astana), implemented under commercialization programs for import substitution in the Republic of Kazakhstan.
-transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) using the Shimadzu IRPrestige-21 instrument was employed as the primary research method. The analysis was conducted in the wavenumber range of 4000-500 cm-1, with the calculation of the Lateral Order Index (LOI) using the Nelson-O`Connor method.
For the first time, spectral markers of recycled cotton degradation (1712-1716 cm-1 peak), absent in native fibers, were quantitatively recorded. It was established that the formation of a linear-oriented sliver ensures maximum sample homogeneity and a decrease in the intensity of amide bands (1558 cm-1), confirming the efficiency of purification. A decrease in the crystallinity index (LOI≈1.39) indicates significant cellulose amorphization.
The correlation between the spectral characteristics of the regenerate and its technological potential has been scientifically substantiated. It is proven that fiber «fatigue» at the molecular level predetermines the increased hygroscopicity of future knitwear and personal protective equipment. The results allow for the optimization of blended yarn spinning modes and serve as a basis for the sustainable development and greening the light industry in Kazakhstan.