Thermomechanical studies of polymer deformation II. A thermodynamic analysis of a viscoelastic material in sinusoidal deformation

I. J. Duvdevani, J. A. Biesenberger, C. C. Gogos

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, a linearly viscoelastic polyurethane film was subjected to continuous, sinusoidal deformation in a new isothermal deformation calorimeter, whose design details were recently reported (1). Internal energy and entropy of the polymer at each state in the deformation cycle were computed from heat rate and work rate data. This was made possible by using linear viscoelasticity theory to predict the irreversible entropy production. Thermal data were corrected for instrument time lag.

Original languageEnglish (US)
Pages (from-to)320-326
Number of pages7
JournalPolymer Engineering & Science
Volume10
Issue number6
DOIs
StatePublished - Jan 1 1970
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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