Accession Number:

AD0243387

Title:

EVALUATION OF EXPERIMENTAL POLYMERS

Descriptive Note:

Rept. for Mar 1959-Mar 1960

Corporate Author:

GENERAL ELECTRIC CO SCHENECTADY NY

Personal Author(s):

Report Date:

1960-06-01

Pagination or Media Count:

121.0

Abstract:

Thermogravimetric analysis TGA in dry N2 is considered in detail as a method for comparing the intrinsic thermal stabilities of experimental polymers on both empirical and fundamental grounds. Two procedural decomposition temperatures are defined and discussed. One, the differential procedural decomposition temperature dpdt, is based on the locations of recognizable curve features, while the second, the integral procedural decomposition temperature ipdt, is based on areas under the curve. Kinetic analysis of volatilization data is discussed on the basis of both the Arrhenius rate equation and its integral. Two quasi-kinetic methods are discussed, one based on empirical time-temperature superposition the other, on an empirical relationship between isothermal times and temperatures in TGA. Two corroborative test methods, differential thermal analysis and thermoparticulate analysis are discussed briefly. TGA curves and tables of data on 54 polymers are presented.

Subject Categories:

  • Polymer Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE