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Synthesis and characterization of aromatic poly(ether ketone)s containing cyclotriphosphazene units

✍ Scribed by Ümit Tunca; Gürkan Hizal

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
310 KB
Volume
36
Category
Article
ISSN
0887-624X

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✦ Synopsis

Bis(4-oxybenzoic acid) tetrakis(phenoxy) cyclotriphosphazene 4,6,3,5,2l 5 ,4l 5 ,6l 5 -triazatriphosphinin-2-yl]oxy-benzoic acid) was synthesized and direct polycondensed with diphenylether or 1,4-diphenoxybenzene in Eaton's reagent at the temperature range of 80-120ЊC for 3 hours to give aromatic poly(ether ketone)s. Polycondensations at 120ЊC gave polymer of high molecular weight. Incorporation of cyclotriphosphazene groups in the aromatic poly(ether ketone) backbone greatly enhanced the solubility of these polymers in common organic polar solvents. Thermal stabilities by TGA for two polymer samples of polymer series ranged from 390 to 354ЊC in nitrogen at 10% weight loss and glass transition temperatures (T g ) ranged from 81.4 to 89.6ЊC by DSC.

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