ISSN:
1572-8870
Keywords:
4,4′-Sulfonylbisphenol
;
(phenoxy)cyclotriphosphazene
;
cyclolinear phosphazene polymer
;
cyclomatrix phosphazene polymer
;
heat and fire resistant
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract A (sulfonylbisphenoxy)-containing cyclotriphosphazene polymer system has been prepared by polycondensation of (phenoxy)chlorocyclotriphosphazene and 4,4′-sulfonylbisphenol. The syntheses by polycondensation using sodium salt of 4,4′-sulfonylbisphenol and by interfacial polycondensation were carried out for comparison. The characterization, thermal stability, and fire resistance of the synthesized polymers were studied. Thermogravimetric analysis showed that the polymers prepared were stable to above 400°C in nitrogen and exhibited high char contents at elevated temperature. The result indicated that the presence of a sulfonyl group was helpful for enhancing thermal stability and the presence of a phosphphazene ring was the cause of the high char residue at elevated temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00696550
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