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

Tunca U., Hizal G.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.36, no.8, pp.1227-1232, 1998 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 8
  • Publication Date: 1998
  • Journal Name: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.1227-1232
  • Keywords: cyclotriphosphazene, aromatic poly(ether ketone), POLYMERS
  • Istanbul Technical University Affiliated: Yes

Abstract

Bis(4-oxybenzoic acid) tetrakis(phenoxy) cyclotriphosphazene (IUPAC name:4-[4-(carboxyphenoxy)-2,4,6,6-tetraphenoxy-1,3,5,2 lambda(5),4 lambda(5),6 lambda(5)-triazatriphosphinin-2-yl]oxy-benzoic acid) was synthesized and direct polycondensed with diphenylether or 1,4-diphenoxybenzene in Eaten's reagent at the temperature range of 80-120 degrees C for 3 hours to give aromatic poly(ether ketone)s. Polycondensations at 120 degrees C 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 354 degrees C in nitrogen at 10% weight loss and glass transition temperatures (T-g) ranged from 81.4 to 89.6 degrees C by DSC. (C) 1998 John Wiley & Sons, Inc.