Regenerated Cellulose Aerogel Fibers with Lightweight and Exceptional Mechanical Performance for Thermal Insulation

in the absence of draft process. Furthermore, the CAF fabrics demonstrated outstanding thermal insulation performance (39.31 mW/m/K), with a temperature difference of 45 °C at 100 °C, significantly reducing heat transfer compared to conventional materials, exhibiting a great promise for use in heat-resistant and cold-weather clothing. Most importantly, the process of CBWT dissolution is significantly accelerated by preheating the ionic liquid (IL)/DMSO solution system, which will significantly improve the recycling efficiency and economic benefits of CBWT. This study provides a simple and effective method for fabricating a high-performance regenerated cellulose aerogel fiber, aiming to promote the development of the textile recycling industry and the innovation of sustainable functional materials.