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Degradation of poly(ethylene terephthalate) waste with dimethyl tin distanoxane as a catalyst
Author(s) -
Báez E. Villafuerte,
Anguiano M. G. Sánchez,
Pérez V. M. Jiménez,
Rodríguez N. A. Pérez,
Rodríguez S. Vázquez
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39361
Subject(s) - gel permeation chromatography , dimethyl terephthalate , triethylene glycol , depolymerization , catalysis , polymer chemistry , differential scanning calorimetry , tin , ethylene glycol , fourier transform infrared spectroscopy , nuclear chemistry , materials science , ethylene , solvent , oligomer , chemistry , chemical engineering , organic chemistry , polymer , engineering , physics , thermodynamics
In this article, we report the degradation of poly(ethylene terephthalate) (PET), which occurs through glycolysis in the presence of dimethyl tin distanoxane [(CH 3 ) 2 Sn(OCOCH 3 ) 2 ] as a catalyst, triethylene glycol (TEG) as a nucleophilic agent, and decaline like a solvent. A number of experiments were executed, which were derived from a factorial experimental design, in which the reaction time was between 40 and 60 min, the amount of TEG was between 3.4 and 5.6 g, and the amount of catalyst was between 0.04 and 0.06% in ratio to PET. The reaction temperature was constant at 175°C in all of the experiments. Once the glycolytic depolymerization occurred, oligomers with a molecular weight around 6000 g/mol were obtained. These oligomers were analyzed through gel permeation chromatography, differential scanning calorimetry, Fourier transform infrared spectroscopy, and 1 H‐NMR. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3482–3488, 2013