Efficient Recovery of Waste Cotton Fabrics Using Ionic Liquid Methods.

Area of Science:

• Materials Science
• Textile Engineering
• Green Chemistry

Background:

• Cotton fiber, a renewable natural cellulose, constitutes a significant portion of textile waste.
• Effective recycling methods for waste cotton fabrics are essential for sustainable textile industries.
• Chemical recovery of reclaimed cellulose materials is key to high-value recycling.

Purpose of the Study:

• To investigate the regeneration of waste colored cotton fabric using an ionic liquid method.
• To establish optimal conditions for dissolving and regenerating cellulose from waste cotton.
• To evaluate the characteristics of regenerated cellulose films for potential applications.

Main Methods:

• Dissolving decolorized waste cotton fabric using ionic liquid 1-allyl-3-methylimidazole chloride ([AMIM]Cl) and zinc chloride (ZnCl2).
• Investigating optimal dissolution conditions ([AMIM]Cl in DMSO, 1:1 ratio, 110 °C, 120 min).
• Preparing regenerated cellulose films (A-film and Z-film) and evaluating their properties.

Main Results:

• Optimal dissolution conditions were identified for waste cotton fabric regeneration.
• Regenerated cellulose films were successfully prepared using both ionic liquid and zinc chloride systems.
• Key characteristics of the regenerated films were systematically investigated and evaluated.

Conclusions:

• The ionic liquid method offers a viable approach for the comprehensive recycling of waste cotton.
• This study provides a theoretical foundation for the recovery and regeneration of waste cotton fabrics.
• The findings support the development of sustainable practices in the textile industry through waste valorization.