Accession Number : ADD095182

Title :   Heat Capacity and Other Thermodynamic Properties of Linear Macromolecules. IV. Polypropylene,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

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

Report Date : Jan 1981

Pagination or Media Count : 19

Abstract : The heat capacity of polypropylene from 0 K to 600 K is reviewed on the basis of measurements on 20 samples reported in the literature. The crystallinity dependence is critically evaluated and a set of recommended data for completely crystalline and amorphous polypropylene are derived. The effect of tacticity on the heat capacity is also evaluated. Entropy, enthalpy, and Gibbs energy functions are calculated. This paper is the fourth in a series of publications which will ultimately cover all heat capacity measurements on linear macromolecules. (Author)

Descriptors :   *POLYPROPYLENE, *MACROMOLECULES, *SPECIFIC HEAT, *THERMODYNAMIC PROPERTIES, CRYSTALLIZATION, AMORPHOUS MATERIALS, CRYSTALS, MOLECULAR STRUCTURE, DENSITY, ENTHALPY, ENTROPY, FREE ENERGY, TRANSITION TEMPERATURE, LINEARITY, MELTS, MEASUREMENT, TABLES(DATA)

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE