TY - JOUR
T1 - The thermal degradation of PET and analogous polyesters measured by thermal analysis Fourier transform IR spectroscopy
AU - Holland, Barry
AU - Hay, James
PY - 2002/3/1
Y1 - 2002/3/1
N2 - The thermal degradation of two commercial poly(ethylene terephthalate) (PET) samples and two laboratory prepared polyesters, poly(ethylene isophthalate) and poly(diethylene glycol terephthalate), was studied using thermogravimetry and thermal analysis-Fourier transform infrared spectroscopy. The commercial PET samples were copolymerised with diethylene glycol and isophthalic acid groups in different proportions, and their thermal stabilities were found to differ. Through a study of the thermal degradation of poly(diethylene glycol terephthalate) and poly(ethylene isophthalate), it was found that diethylene glycol and isophthalate units promoted thermal degradation through increased chain flexibility and more favourable bond angles, respectively. The thermal degradation of all the polyesters tested lead to the formation of non-volatile residue. Infrared spectroscopic analysis indicated that the residue consisted almost exclusively of interconnected aromatic rings. (C) 2002 Elsevier Science Ltd. All rights reserved.
AB - The thermal degradation of two commercial poly(ethylene terephthalate) (PET) samples and two laboratory prepared polyesters, poly(ethylene isophthalate) and poly(diethylene glycol terephthalate), was studied using thermogravimetry and thermal analysis-Fourier transform infrared spectroscopy. The commercial PET samples were copolymerised with diethylene glycol and isophthalic acid groups in different proportions, and their thermal stabilities were found to differ. Through a study of the thermal degradation of poly(diethylene glycol terephthalate) and poly(ethylene isophthalate), it was found that diethylene glycol and isophthalate units promoted thermal degradation through increased chain flexibility and more favourable bond angles, respectively. The thermal degradation of all the polyesters tested lead to the formation of non-volatile residue. Infrared spectroscopic analysis indicated that the residue consisted almost exclusively of interconnected aromatic rings. (C) 2002 Elsevier Science Ltd. All rights reserved.
KW - isophthalic acid
KW - poly(ethylene terephthalate)
KW - diethylene glycol
UR - http://www.scopus.com/inward/record.url?scp=0037074283&partnerID=8YFLogxK
U2 - 10.1016/S0032-3861(01)00775-3
DO - 10.1016/S0032-3861(01)00775-3
M3 - Article
VL - 43
SP - 1835
EP - 1847
JO - Polymer
JF - Polymer
IS - 6
ER -