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Transesterification reaction of polyarylate and copolyester (PETG) blends
Author(s) -
Oh Taeg Su,
Ryou Jin Ho,
Chun Yong Sung,
Kim Woo Nyon
Publication year - 1997
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11726
Subject(s) - copolyester , materials science , transesterification , differential scanning calorimetry , fourier transform infrared spectroscopy , miscibility , glass transition , polymer chemistry , proton nmr , ethylene , composite material , chemical engineering , polymer , organic chemistry , polyester , chemistry , catalysis , physics , engineering , thermodynamics
Transesterification reactions between polyarylate (PAr) and a copolyester (PETG) have been investigated by proton nuclear magnetic resonance (NMR), Fourier‐transform infrared spectroscopy (FTIR), and differential scanning calorimetry. Blends of PAr and PETG were prepared by melt mixing and solution‐casting with weight fractions of PAr in the blends varying from 0.90 to 0.10. The PETG is a copolyester containing ethylene‐1,4‐cyclohexylene dimethylene terephthalate. From the thermal analysis of the PAr/PETG melt blends, a single glass transition temperature is observed, which indicates a miscibility between the PAr and PETG. The benzene insoluble fraction of the PAr/PETG (50/50) melt blends and solution‐cast blends were characterized using NMR and FTIR. The results of NMR and FTIR support the conclusion that transesterification reactions between the PAr and PETG occurred under the melt blending conditions applied.