Preparation of recycled cellulose-polyvinyl alcohol reinforced co-blended fibers based on waste cotton
摘要
To achieve sustainable development of resources and reduce environmental pollution, it is particularly important to accelerate the use of renewable resources. Cellulose is an abundant renewable resource with biocompatible, degradable and recyclable characteristics. To further improve the effect on cellulose, 1-butyl-3-methylimidazole chloride ([Bmim]Cl)/dimethyl sulfoxide (DMSO) was used to dissolve and recover cellulose from waste cotton. Regenerated cellulose (RCF) and regenerated cellulose-polyvinyl alcohol blend (RCF/PVA) were prepared by wet spinning. To study the dyeing performance of Pu ’er tea pigment on RCF/PVA The dyeing performance of RCF/PVA was investigated. The dyeing performance of RCF/PVA was investigated. The experiments showed that, compared with RCF, the strength of RCF/PVA with 15% PVA was improved, and the residual carbon at 700 °C of thermal decomposition was reduced from 21.4 to 0.1%. With the increase of PVA content, RCF/PVA has better dyeing effect than pure cellulose regenerated fibre on the natural pigment extracted from Pu-erh tea, and the preparation of RCF/PVA provides a new way of researching new composite fibre materials.