A novel thermooxidatively stable poly(ester-imide-benzoxazole)
Conference
·
OSTI ID:141552
- Univ. of Sothern Mississippi, Hattiesburg, MS (United States)
A poly(ester-amide-imide) was synthesized by the low temperature solution polycondensation of 4-amino-5-hydroxy-N,4{prime}-hydroxyphenyl phthalimide with isophthaloyl chloride. Subsequent thermal cyclodehydration of the poly(ester-amide-imide) at 320{degrees}C in vacuum afforded the poly(ester-imide-benzoxazole). This polymer was only soluble in sulfuric acid. FTIR and NMR spectra confirmed structure. The poly(ester-imide-benzoxazole) had no detectable thermal transitions up to 500{degrees}C in nitrogen, and was reasonably stable in air and nitrogen, with weight retentions of 95% at 500{degrees}C.
- OSTI ID:
- 141552
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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