Kinetics of Degradation of Some Polystyrenes and Copolymers of Styrene and Acrylonitrile.

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Abstract:

The kinetics of degradation of some polystyrenes and a series of copolymers of styrene and up to 33.4 acrylonitrile were studies by dynamic thermogravimetry in vacuum. An average activation energy of 42.5 k. cal was found for the entire series independent of composition. The primary effect of the acrylonitrile units is to increase the rate of chain scission and this effect is masked by the overall rapid initial rate of chain scission as the sample temperature is increased. Author

Author(s):
Bain, David R.
Author Organization(s):
DAYTON UNIV OHIO RESEARCH INST
Descriptive Note:
Summary technical rept. Mar-Sep 70,
Pagination:
0064

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-71-132
Contract/Grant Number(s):
F33615-69-C-1385
Task Number(s):
734004
Project Number(s):
AF-7340
Monitor Series:
TR-71-132
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*POLYMERS, *THERMOGRAVIMETRIC ANALYSIS, *DECOMPOSITION, ACETONITRILE
Field(s)/Group(s):
Physical Chemistry, Polymer Chemistry
Keyword(s):
STYRENE COPOLYMERS
Report Date:
1971 Jun 01