| 摘要 |
PURPOSE: A recycling method of the Polyethyleneterephthalate waste is provided to improve the degree of polymerization of PET by efficiently removing the volatile material or the oligomer, which is the contaminant which exists in the PET waste. CONSTITUTION: A recycling method of the Polyethyleneterephthalate waste is comprised of the following processes: a first process of mechanically grinding the PET waste and making into a chip type; a second process of physically removing the impurity in the PET of chip type; a third process of washing the PET of chip type; a fourth process of stirred and reacting the washed PET of chip type and the solution in which the D-cysteine is included; a fifth process of drying the PET of chip type in which the reaction is completed; and a sixth process of manufacturing a recycled PET by melting the dried PET of chip type. |
