Influence of particle size on the performance of post-consumer polyethylene terephthalate alkaline hydrolysis.
Keywords:Hydrolysis, alkali, plastic, color, size
The generation of plastic worldwide has increased at an uncontrolled rate, where the thermoplastic that appears the most is polyethylene terephthalate PET, due to its use in the food industry. At currents, Several technologies are currently used for their proper final disposal. In recent years, chemical recycling technologies have been strengthened to obtain products of industrial interest from waste. In this sense, hydrolysis is a technique that seeks the decomposition of PET, through a set of chemical reactions taking into account factors such as: PET particle size, catalyst, reaction conditions, PET composition and others. Two dimensions of plastic were used for the study: 5mm x 5mm (T5mm) and 10mm x 10mm (T10mm), of green and violet colored plastics. The material obtained was characterized by means of infrared spectroscopy (FTIR) and solubility test, corroborating the presence of terephthalic acid (TPA). "T5mm, green" particle was the best result, with a yield of 96.346%. Therefore, the smaller the particle size, the higher the probability of chemical interaction between the surface of the PET particles and the base solution.
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