• Temperature invariance ofS0-parameter of polymers

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      https://www.ias.ac.in/article/fulltext/pram/028/02/0195-0203

    • Keywords

       

      Polymer; S0-parameter; volume expansivity; heat capacity; Grüneisen parameter; fractional free volume

    • Abstract

       

      The parameterS0 which is characteristic of molten alkali halides and liquids has also been shown to be characteristic of a wide variety of polymers. Calculated data using the volume expansivity of the polymer establish the temperature invariance and constancy of theS0-parameter which retains, on an average, a constant value of 1.11 for polymers. Further understanding of the significance of fractional free volume andS0-parameter in describing various thermoacoustic properties and the anharmonic behaviour in polymers, has been developed.

    • Author Affiliations

       

      B K Sharma1 2 R R Reddy1 3

      1. Department of Physics, Regional College of Education, Bhubaneswar - 751 007, India
      2. Physics Group, DMES & DP, National Council of Educational Research and Training, New Delhi - 110 016, India
      3. Department of Physics, S K University, Anantpur - 515 003, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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