FAN Qing-rong, LIN Xin, GAO Jin-gui, ZHAO De-lu. COMPARISON OF CRYSTALLIZATION UNDER FREE AND CONSTRAINED CONDITIONS FOR ORIENTED AMORPHOUS PET FILM[J]. Acta Polymerica Sinica, 1992,(4):509-512.
FAN Qing-rong, LIN Xin, GAO Jin-gui, ZHAO De-lu. COMPARISON OF CRYSTALLIZATION UNDER FREE AND CONSTRAINED CONDITIONS FOR ORIENTED AMORPHOUS PET FILM[J]. Acta Polymerica Sinica, 1992,(4):509-512.DOI:
The Crystallization of constrained and fre oriented amorphous PET films were studied by using density
birefringence and stress measurements. It has been shown that depending on the birefringence of original sample
the effect of fixing two ends of samples on the Crystallization rate shows different behavior. For amor hous PET film with high birefringence the Crystallization rate of constrained sample is faster. For oriented amorphous PET with very low birefringence the Crystallization rate of free sample is faster.