The study of this paper is about the dissolving and recycling of cotton component from waste cotton-polyester blended fabric via NMMO solvent. To study the affecting effects of polyester, dissolved the polyester in NMMO solvent, compared with some factors, including dissolving temperature, dissolving time and antioxidants supplements, there is no effect on the weight and molecule structure of polyester. The dissolving properties of cotton component in the waste cotton/polyester blended fabric which was dissolved at 85 ℃ for 1. 5 h via NMMO solvent were investigated later, after the polyester filtered, the property of the cellulose solution was characterized by the image of polarizing microscope, refractive index, rheological behavior to study the spinnability. The study found the solution of high degree of polymerization but low cellulose content shows good spinnability.%为研究涤纶在NMMO溶剂中所受的影响,采用NMMO溶剂对废旧涤棉混纺织物中的含棉成分进行溶解回收后发现,溶解温度、溶解时间以及抗氧化剂对涤纶的质量和结构基本无影响；采用NMMO溶剂在85℃下溶解废旧涤棉混纺织物1.5h,过滤出涤纶后,通过偏光显微镜观察、折射率和溶液流变性能测试对纤维素溶液的性能进行表征,研究其可纺性能.研究发现,高聚合度、低纤维素含量的溶液表现出较好的可纺性.
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