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Effect of the temperature on the drawing behavior of poly(ether ether ketone)
Author(s) -
Russo R.
Publication year - 1992
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.1992.070461214
Subject(s) - crystallization , peek , ether , materials science , amorphous solid , enthalpy , ketone , polymer chemistry , deformation (meteorology) , thermal analysis , chemical engineering , thermal , composite material , thermodynamics , crystallography , organic chemistry , polymer , chemistry , physics , engineering
This study examines the drawing behavior of amorphous films of poly(ether ether ketone) (PEEK) and the effect of the drawing and the drawing temperature on some physical properties of the drawn samples. The thermal analysis shows that the amorphous films drawn at 200% of deformation and at temperatures of 80, 120, and 140°C crystallize by heating and the crystallization occurs at lower temperature with a lower crystallization enthalpy. The first effect can be related to the influence of orientation on the crystallization rate and the second to strain‐induced crystallization. The dynamic—mechanical behavior of the drawn samples is in good agreement with the thermal analysis and confirms the presence of strain‐induced crystallization at drawing temperatures well below 180°C. © 1992 John Wiley & Sons, Inc.