Accession Number:

AD0269081

Title:

THERMODYNAMIC PROPERTIES OF POLYETHYLENE

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1961-08-03

Pagination or Media Count:

15.0

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, CpT 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 caldeg gm. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE