Premium
High temperature crystallization of poly(ethylene terephthalate)
Author(s) -
Roland C. M.
Publication year - 1991
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.760311202
Subject(s) - materials science , melting point , crystallization , poly ethylene , annealing (glass) , ethylene , melting temperature , superheating , infrared , thermodynamics , composite material , organic chemistry , optics , chemistry , physics , catalysis
Annealing poly(ethylene terephthalate) (PET) at high temperature results in a crystalline phase stable to 10°C higher than the temperature previously regarded as the equilibrium melting point. Melting temperatures as high as 289°C can be attained, which is equivalent to the equilibrium melting point determined herein for PET. The high melting point and tendency to superheat suggest that the crystals possess a substantial extended chain structure, notwithstanding the magnitude of the infrared fold band.