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Second-order Phase Transition Behavior in a Polymer above the Glass Transition Temperature

preprint
revised on 13.12.2020, 08:38 and posted on 15.12.2020, 07:53 by Mitsuru Ishikawa, Taihei Takahashi, Yu-ichiro Hayashi, Maya Akashi, Takayuki Uwada

Glass transition was primarily considered to be not phase transition; however, it has similarity to the second-order phase transition. Recent single-molecule spectroscopy developments have prompted re-investigating glass transition at the microscopic scale, revealing that glass transition includes phenomena similar to second-order phase transition. They are characterized by microscopic collective polymer motion and discontinuous changes in temperature dependent relaxation times, later of which is similar to critical slowing down, within a temperature window that includes the polymer calorimetric glass transition temperature. Considering that collective motion and critical slowing down are accompaniments to critical phenomena, second-order phase transition behavior was identified in polymer glass transition.

Funding

No research grants

History

Email Address of Submitting Author

mi195526@josai.ac.jp

Institution

Josai University

Country

Japan

ORCID For Submitting Author

0000-0001-9438-2270

Declaration of Conflict of Interest

All authors have no conflict of interest.

Version Notes

Fourth submission

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