Closed-loop recycling of colored regenerated cellulose fibers from the dyed cotton textile waste

Worldwide, 45 million tons of waste cotton textiles are produced annually, which 75% is burned and buried, leading to serious environmental pollution. In this study, a method for directly preparing colored regenerated cellulose fibers (CRCFs) from dyed textile (DCTW) was demonstrated. The tensile strength CRCFs reached 226 MPa, equivalent that commercial viscose fibers. exhibited excellent color fastness hydrophilicity. addition, can be reprocessed into secondary CRCFs. 14.64% less than the primary due reduction in polymerization degree CRCFs; however, it also woven fabrics. exploration utilization provides an experimental basis prolonging service life DCTW. This approach achieves closed-loop recycling prevents pollution caused by decoloring dyeing.