Second-order Phase Transition Behavior behind Polymer Glass Transition

31 October 2022, Version 8
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Glass transition has similarity to the second-order phase transition in temperature dependent changes in entropy, non-Arrhenius viscosity, and heat capacity of glass forming materials. However, it has primarily been considered to be not phase transition. Recent single-molecule spectroscopy developments prompted re-investigating glass transition at the nanometer scale probing resolution, showing that glass transition includes phenomena similar to the second-order phase transition. They are characterized by microscopic collective polymer motion and discontinuous changes in temperature dependent relaxation times, the latter of which resembles the critical slowing down of second-order phase transitions, within a temperature window above the polymer calorimetric glass transition temperature. Simultaneous collective motion and critical slowing down occurrences disclose that the second-order phase transition hides behind polymer glass transition.

Keywords

fluorescence
glass phase
glass transition physics
Single Molecule

Supplementary materials

Title
Description
Actions
Title
ver 8.0 ChemRxiv SupportingInfo MIshikawa
Description
The ver 8.0 Supporting Information is updated in consistent with the ver 8.0 manuscript. In addition, in the Step 2 in I. Material and methods, B. Sample preparation, I have deleted "washing with a KOH(50% w/w) aqueous solution", because I found inconveniences by doing this procedure.
Actions

Supplementary weblinks

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.