Chemical degradation of PET: Waste with different catalysts

Abstract

This paper presents a review of work that covers chemical degradation of polyethylene terephthalate, known as PET. In this Paper, Several processes for PET degradation which is carried out by using glycolysis processes with ethylene glycol (EG) or other glycols in the presence of different simple chemicals acting as catalysts, namely, categorized in ionic liquids, metal salts, hydrotalcites, and enzymes have been discussed. From every process, some materials as a sample were used, and the one which is going to bring the best result is noted. The effect of some parameters such as degradation temperature, pressure, amount of sample, material ratio, and stirring rate was investigated. As a result we compared the methods and finally the best method for shown for PET waste degradation into monomers or oligomers is shown.