DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST

ABSTRACT Thermal degradation of Poly(ethylene terephthalate) (PET) bottles waste was carried out by glycolysis using triethyleneglycol (TEG) as nucleophilic agent and N1,N2-bis(2-aminobenzyl)-1,2-diaminoethane zinc(II) (ABEN), in order to test this compound as catalyst in the degradation of PET unti...

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Autores principales:	OVALLE-SÁNCHEZ,A. A., ELIZONDO-MARTÍNEZ,P., PÉREZ-RODRÍGUEZ,N. A., HERNÁNDEZ-FERNÁNDEZ,E., SÁNCHEZ-ANGUIANO,M. G.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	Poly(ethyleneterephthalate) degradation catalyst chemical recycling glycolysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403741
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spelling	oai:scielo:S0717-970720170004037412018-04-02DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYSTOVALLE-SÁNCHEZ,A. A.ELIZONDO-MARTÍNEZ,P.PÉREZ-RODRÍGUEZ,N. A.HERNÁNDEZ-FERNÁNDEZ,E.SÁNCHEZ-ANGUIANO,M. G. Poly(ethyleneterephthalate) degradation catalyst chemical recycling glycolysis ABSTRACT Thermal degradation of Poly(ethylene terephthalate) (PET) bottles waste was carried out by glycolysis using triethyleneglycol (TEG) as nucleophilic agent and N1,N2-bis(2-aminobenzyl)-1,2-diaminoethane zinc(II) (ABEN), in order to test this compound as catalyst in the degradation of PET until to obtain short chains of polyester (oligomers). The depolymerization processes was tested at 180, 190 and 210 °C, and two molar ratios of PET:TEG (1:1.3 and 1:2.6), the amount of catalyst used was fixed at 1% in relation to PET, the best experiment of PET glycolysis was found at 190 °C during two hours in a mass relation PET:TEG 1:1.3. All products were analyzed by Fourier transform infrared spectroscopy (IR), gel permeation chromatography (GPC) and differential scanning calorimetry (DSC), the behavior of the reaction rate was studied for the best experiment by measuring the amount of degraded PET at different glycolysis time. The degradation of PET was favored with the use of ABEN, which accelerates the reaction, obtaining oligomers in the absence of an organic solvent or reaction medium, this is the most efficient catalyst found so far. The oligomers were obtained with molecular weight between 900 and 1500 g mol-1 depending on the reaction time, 60 min was the less time of the total glycolysis of PET. Also was found that the molecular weight of the oligomers increased along the glycolysis, due to the recombination with TEG and ethylene glycol produced in degradation.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403741en10.4067/s0717-97072017000403741
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Poly(ethyleneterephthalate) degradation catalyst chemical recycling glycolysis
spellingShingle	Poly(ethyleneterephthalate) degradation catalyst chemical recycling glycolysis OVALLE-SÁNCHEZ,A. A. ELIZONDO-MARTÍNEZ,P. PÉREZ-RODRÍGUEZ,N. A. HERNÁNDEZ-FERNÁNDEZ,E. SÁNCHEZ-ANGUIANO,M. G. DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
description	ABSTRACT Thermal degradation of Poly(ethylene terephthalate) (PET) bottles waste was carried out by glycolysis using triethyleneglycol (TEG) as nucleophilic agent and N1,N2-bis(2-aminobenzyl)-1,2-diaminoethane zinc(II) (ABEN), in order to test this compound as catalyst in the degradation of PET until to obtain short chains of polyester (oligomers). The depolymerization processes was tested at 180, 190 and 210 °C, and two molar ratios of PET:TEG (1:1.3 and 1:2.6), the amount of catalyst used was fixed at 1% in relation to PET, the best experiment of PET glycolysis was found at 190 °C during two hours in a mass relation PET:TEG 1:1.3. All products were analyzed by Fourier transform infrared spectroscopy (IR), gel permeation chromatography (GPC) and differential scanning calorimetry (DSC), the behavior of the reaction rate was studied for the best experiment by measuring the amount of degraded PET at different glycolysis time. The degradation of PET was favored with the use of ABEN, which accelerates the reaction, obtaining oligomers in the absence of an organic solvent or reaction medium, this is the most efficient catalyst found so far. The oligomers were obtained with molecular weight between 900 and 1500 g mol-1 depending on the reaction time, 60 min was the less time of the total glycolysis of PET. Also was found that the molecular weight of the oligomers increased along the glycolysis, due to the recombination with TEG and ethylene glycol produced in degradation.
author	OVALLE-SÁNCHEZ,A. A. ELIZONDO-MARTÍNEZ,P. PÉREZ-RODRÍGUEZ,N. A. HERNÁNDEZ-FERNÁNDEZ,E. SÁNCHEZ-ANGUIANO,M. G.
author_facet	OVALLE-SÁNCHEZ,A. A. ELIZONDO-MARTÍNEZ,P. PÉREZ-RODRÍGUEZ,N. A. HERNÁNDEZ-FERNÁNDEZ,E. SÁNCHEZ-ANGUIANO,M. G.
author_sort	OVALLE-SÁNCHEZ,A. A.
title	DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
title_short	DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
title_full	DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
title_fullStr	DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
title_full_unstemmed	DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST
title_sort	degradation of poly(ethyleneterephtalate) waste to obtain oligomers using a zinc complex as catalyst
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403741
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DEGRADATION OF POLY(ETHYLENETEREPHTALATE) WASTE TO OBTAIN OLIGOMERS USING A ZINC COMPLEX AS CATALYST

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