THERMODYNAMIC PROPERTIES OF POLYETHYLENE

Abstract

The lack of fundamental data on the properties of polyethylene prompted a study of the available thermodynamic parameters of this material. From published data the entropy, enthalpy, and Gibbs free energy values of conventional high pressure polyethylene were calculated over the range 0 to 315 K. The use of a linear Tarassov function to estimate the specific heat of polyethylene is discussed. The thermodynamic function, Cp/T versus T, has been calculated and exhibits an increase at 60 K. An approximation is made of the number of vibrating units per repeating unit at 273 K. Cp-Cv is calculated at 273 K and found to be 0.082 cal/deg gm. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 03, 1961
Accession Number
AD0269081

Entities

People

  • M.c. Petree
  • R.w. Warfield

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Calorific Value
  • Chemical Properties
  • Dielectric Polymers
  • Energy
  • Enthalpy
  • Films
  • Free Energy
  • High Pressure
  • Materials
  • Physical Properties
  • Specific Heat
  • Standard Enthalpy Changes
  • Thermodynamic Properties

Fields of Study

  • Chemistry

Readers

  • Combustion science or combustion engineering.
  • Polymer Science and Technology