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<p>Traditional dyeing techniques, which frequently use alkali and inorganic salts, present serious environmental problems, underscoring the need for more environmentally friendly substitutes in the textile sector. In the present study, spun-dyed regenerated cellulosic fibres offer a viable approach that satisfies sustainability goals by lowering environmental effects and improving dyeing uniformity. Using a basic dye-sulfonated polymer complex as the colourant, this work explores a unique method for creating spun-dyed regenerated cellulose fibres (viscose). The complex's potential effectiveness for the spun-dyeing process was demonstrated by its high miscibility and stability within the spinning dope. Compared to traditional reactive dyeing, the developed spun dyed offered a more environmentally friendly alternative by addressing a number of issues with existing dyeing techniques. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV–visible spectroscopy, elemental analysis (CHNS), energy-dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), tensile testing, optical microscopy, surface charge analysis, and colour intensity measurements were among the various analytical techniques used to characterise the dyed fibres. Optimization of the dyeing process was achieved by determining the ideal concentration of the sulfonated polymer and dye, resulting in fibers with enhanced performance characteristics. The washing fastness of the spun-dyed fibers met the quality standards required for majority of the textile applications. Overall, this study offers insightful information about the creation of extremely colourful spun-dyed viscose fibers, offering a sustainable and environmentally friendly dyeing alternative for cellulosic materials.</p> Graphical abstract <p></p>

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Spun-dyeing of regenerated cellulose fibers using basic dye-sulfonated polymer complexes: a sustainable approach to in-dope coloration

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Sagar R. Patil,
  • Nishita Lucas,
  • Nilesh Waghmare,
  • Vishvajit Juikar,
  • Pranit B. Patil,
  • Dipak V. Pinjari

摘要

Traditional dyeing techniques, which frequently use alkali and inorganic salts, present serious environmental problems, underscoring the need for more environmentally friendly substitutes in the textile sector. In the present study, spun-dyed regenerated cellulosic fibres offer a viable approach that satisfies sustainability goals by lowering environmental effects and improving dyeing uniformity. Using a basic dye-sulfonated polymer complex as the colourant, this work explores a unique method for creating spun-dyed regenerated cellulose fibres (viscose). The complex's potential effectiveness for the spun-dyeing process was demonstrated by its high miscibility and stability within the spinning dope. Compared to traditional reactive dyeing, the developed spun dyed offered a more environmentally friendly alternative by addressing a number of issues with existing dyeing techniques. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV–visible spectroscopy, elemental analysis (CHNS), energy-dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), tensile testing, optical microscopy, surface charge analysis, and colour intensity measurements were among the various analytical techniques used to characterise the dyed fibres. Optimization of the dyeing process was achieved by determining the ideal concentration of the sulfonated polymer and dye, resulting in fibers with enhanced performance characteristics. The washing fastness of the spun-dyed fibers met the quality standards required for majority of the textile applications. Overall, this study offers insightful information about the creation of extremely colourful spun-dyed viscose fibers, offering a sustainable and environmentally friendly dyeing alternative for cellulosic materials.

Graphical abstract