On the possibility of modeling of polymers glass transition in a wide range of cooling and heating rates

T. V. Tropin, J. W P Schmelzer, V. Aksenov

Research output: Contribution to journalArticle

Abstract

The presented work continues the investigation of the problems connected with modeling of the kinetics of polymers glass transition in a wide range of temperature change rates. In our previous work Tropin et al. (2015) , an attempt to model a big set of heat capacity curves of polystyrene glass transition has been made, and the inability of the common methods to do this within a single set of parameters has been demonstrated. To go a step further, in this work we proceed with the common and several novel methods of modeling. To normalize the models with each other, a fit of the 10K/min cooling/heating DSC curves of polystyrene is made, and the literature model parameters readjusted. Further, the modeling of the reduced heat capacity curves at the cooling and heating rates in a wide range of q =10-6-106 K/s with a logarithmic step is performed. The comparison of T g (q) behavior with lately measured data for polystyrene is made. It is shown, that the methods need some modifications to qualitatively describe details of the glass transition kinetics in a wide range of q. Some of the possibilities to advance the models are discussed.

Original languageEnglish
JournalJournal of Molecular Liquids
DOIs
Publication statusAccepted/In press - Sep 21 2016

Fingerprint

Heating rate
Glass transition
Polystyrenes
Polymers
Cooling
cooling
polystyrene
heating
glass
polymers
Specific heat
curves
specific heat
Kinetics
kinetics
Heating
Temperature
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

On the possibility of modeling of polymers glass transition in a wide range of cooling and heating rates. / Tropin, T. V.; Schmelzer, J. W P; Aksenov, V.

In: Journal of Molecular Liquids, 21.09.2016.

Research output: Contribution to journalArticle

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