Accession Number : ADD095178

Title :   Heat Capacity and Other Thermodynamic Properties of Linear Macromolecules. II. Polyethylene,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Gaur, Umesh ; Wunderlich, Bernhard

Report Date : Jan 1981

Pagination or Media Count : 39

Abstract : The heat capacity of polyethylene from 0 K to 600 K is reviewed using measurements on 46 samples reported in the literature. The crystallinity dependence is evaluated critically and a set of recommended data for completely crystalline and amorphous polyethylene is derived. Entropy, enthalpy, and Gibbs energy functions are calculated. Polyethylene can serve as a standard material for the thermodynamic functions of a simple linear macromolecule. This paper is the second in a series which will ultimately cover all heat capacity measurements on linear macromolecules. (Author)

Descriptors :   *POLYETHYLENE, *SPECIFIC HEAT, *THERMODYNAMIC PROPERTIES, CRYSTALS, CRYSTALLIZATION, DENSITY, ENTHALPY, ENTROPY, HEAT OF FUSION, FREE ENERGY, TRANSITION TEMPERATURE, MACROMOLECULES, LINEARITY, MELTS, TABLES(DATA)

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE