Spinnability and Dyeability for Copolymer/Nano-SiO2Fiber of Glycol and 1,2-Propanediol with PTA

Abstract In the use of corn raw materials to produce glycol (corn-EG) and 1,2-propanediol (PDO), the output of PDO is more than that of corn-EG and the latter also contains some PDO. In order to produce high-performance polyester fibers by low-cost corn-EG instead of petroleum-EG, the paper initially seeks for the highest percentage of PDO that can be added in the conventional copolymerization of corn-EG/PDO/nano-SiO2 and terephthalic acid (PTA). The experiment shows that as the content of PDO in copolyester exceeds 12%, the POY breaking strength quickly decreases. The DTY of copolyester fiber with 12% PDO and 0.1% nano-SiO2 can be dyed in the condition of atmospheric pressure and boiling water.