MOLECULAR WEIGHT DEPENDENCE OF THE GLASS TRANSITION TEMPERATURE IN SODIUM PHOSPHATE POLYMERS.

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Abstract:

It is shown that an inorganic ionic polymer sodium polyphosphate exhibits the same type of glass transition temp. versus average chain length behavior as non-ionic organic polymers. If the chain ends resemble the terminal units, specifically in terms of the number of anions per phosphorus atom, the material is entirely analogous in its behavior to the organic materials, as shown, for instance, by the applicability of the Gibbs-DiMarzio theory. By contrast, if the terminal units possess two anions per phosphorus atom, a profound change in behavior is observed. Author

Author(s):
Eisenberg, A. ; Sasada, T.
Author Organization(s):
CALIFORNIA UNIV LOS ANGELES
Descriptive Note:
Technical rept. no. 2,
Annotation:
Molecular weight dependence of the glass transition temperature in sodium phosphate polymers.
Pagination:
0032

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
Nonr233 87
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*INORGANIC POLYMERS, TRANSITION TEMPERATURE), (*SODIUM COMPOUNDS, PHOSPHATES), POLYMERS, IONS, PHASE STUDIES, GLASS, MOLECULAR STRUCTURE, MOLECULAR WEIGHT, THERMOCHEMISTRY, THERMAL EXPANSION, DENSITY, THEORY
Keyword(s):
SODIUM PHOSPHATES
Report Date:
1964 Jun 10