Citation:
XU Mao, ZHU Lilan, GUAN Jiayu. MORPHOLOGICAL STUDIES OF PET FILMS WITH DIFFERENT CRYSTALLIZATION RATE IN DRAWING PROCESSES *[J]. Chinese Journal of Polymer Science,
1984, 2(1): 57-63.
MORPHOLOGICAL STUDIES OF PET FILMS WITH DIFFERENT CRYSTALLIZATION RATE IN DRAWING PROCESSES *
摘要:
Morphological changes during stretching of two PET samples (S and T) with different crystallization rate have been studied by means of SALS, solvent etching and polarizing microscope techniques. Results show that under the same drawing conditions larger and more perfect rod-like and spherulitic superstructures were formed more easily in the sample with higher crystallization rate (sample S). The amount of less compact regions which may be easily attacked by the vapor of allyl amine decreases more rapidly insample S than in sample T during stretching,and these regions are more randomly distributed in sample T especially at low elongations.The difference of the two samples in morphological changes is coincident with their differece in tensile behavior.
English
MORPHOLOGICAL STUDIES OF PET FILMS WITH DIFFERENT CRYSTALLIZATION RATE IN DRAWING PROCESSES *
Abstract:
Morphological changes during stretching of two PET samples (S and T) with different crystallization rate have been studied by means of SALS, solvent etching and polarizing microscope techniques. Results show that under the same drawing conditions larger and more perfect rod-like and spherulitic superstructures were formed more easily in the sample with higher crystallization rate (sample S). The amount of less compact regions which may be easily attacked by the vapor of allyl amine decreases more rapidly insample S than in sample T during stretching,and these regions are more randomly distributed in sample T especially at low elongations.The difference of the two samples in morphological changes is coincident with their differece in tensile behavior.
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