Reactive & Functional Polymers, Vol.93, 18-21, 2015
Synthesis of water-soluble wholly aromatic polyketones bearing 1,1'-binaphthyl-6,6'-diyl units
A water-soluble wholly aromatic polyketone modified with sodium carboxylate (PK-COONa) was synthesized through demethylation of the wholly aromatic polyketone bearing four methoxy groups per repeat unit (PK-OMe) followed by ethoxycarbonylmethylation and saponification. The obtained polyketones, i.e., the methyl-cleaved analogue (PR-OH), the ethoxy carbonyl group-bearing analogue (PK-COOEt), the sodium carboxylate analogue (PK-COONa), and the carboxy group-bearing analogue (PK-COOH), have varying solubilities in water and common organic solvents and thermal stabilities, depending on the functional groups. (C) 2015 Elsevier B.V. All rights reserved.