Abstract: In order to better resolve cotton component from the waste cotton-polyester blended fabrics, the paper adopted four different activation methods, including sodium hydroxide、sodium hydroxide & ultrasonic、ethylenediamine and ethylenediamine & ultrasonic, to activate the blended fabrics and gain the optimize basing on minimizing the impact on polyester and maximizing the solubility of cotton cellulose. Researching the impacts of four different activation methods on mass、mechanical properties and chemical structures of waste cotton-polyester blended fabrics, the results revealed that the sodium hydroxide、sodium hydroxide and ultrasonic have less effect on polyester, and can be used to activate the waste cotton-polyester blend fabrics. The influences of the two methods above on molecular structure and solubility of cotton fibers showed that sodium hydroxide & ultrasonic is the best suitable way to activate the waste cotton-polyester blended fabrics.

Key words: waste cotton-polyester , activation , structure , solubility