Abstract:

In order to pooly supercritical carbon dioxide (CO2) on textile finishing, the comprehensive analysis on supercritical CO2 from basic peinciples, influence factors, property alteration with finishing, and applications in textile finishing at home and abroad were carried out. The result show that the important factors influencing textile finishing with supercritical CO2 are the solubility of finishing agent and the state of aggregation of fibre. In addition, the change of  temperature and pressure also greatly infuence finishing with supercritical CO2. The state of aggregation of fibre would generate a series of changes after finishing, and then lead to properies change. The distribution and content of finishing agent in fibre or textile will greatly influence the finishing effect. Besides the application of supercritical CO2 on the finishing of synthetic fibers, the research of natural fiber finishing and special functional finishing with supercritical CO2 should be strengthened.

Key words: supercritical CO2 fluid, textile, functional finishing, solubility property, aggregation state