Abstract
The ordering process and glass transition of poly(ethylene terephthalate) (PET) in oriented glassy states have been investigated using real time X-ray scattering experiment with synchrotron radiation sources and (temperature modulated) differential scanning calorimetry. The time evolution of the X-ray scattering patterns observed during the isothermal annealing process could well be reproduced using the kinetics of structure formation from the nematic-like structure to the crystal-like structure by way of the smectic structure. During the heating process a corresponding change in X-ray scattering patterns was observed and a continuous structural change from the oriented glassy state to the crystalline state through the smectic-like structure was confirmed. This structural change is accompanied with a continuous increase in the glass transition temperature, which is elucidated using differential scanning calorimetry.
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Keywords
- Glass Transition Temperature
- Glassy State
- Total Heat Flow
- Rigid Amorphous Fraction
- Dielectric Relaxation Spectroscopy
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Fukao, K., Fujii, S., Saruyama, Y., Tsurutani, N. (2007). Structure Formation and Glass Transition in Oriented Poly(Ethylene Terephthalate). In: Reiter, G., Strobl, G.R. (eds) Progress in Understanding of Polymer Crystallization. Lecture Notes in Physics, vol 714. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-47307-6_6
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DOI: https://doi.org/10.1007/3-540-47307-6_6
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