Synthesis and characterization of new poly(azomethine ester)s having phenylthiourea units

Abstract

New polyesters having azomethine and phenylthiourea groups in the polymer backbone were synthesized by interfacial polycondensation method. The dihydroxy monomer N-(4-hydroxy-3-methoxybenzal) N′-(4′-hydroxyphenyl)thiourea was condensed with six diacid chlorides: terephthaloyl, isophthaloyl, azeloyl, suberoyl, pimeloyl and adipolyl chlorides. The resulting polyesters were characterized by viscosity, IR, NMR and TGA analysis. The wholly aromatic poly(azomethine ester) derived from terephthaloyl chloride when blended with polyaniline/NH4OH, polyaniline/HCl and pure polyaniline shows conductance in the range 3.2 × 10-3-0.91 × 10-1 S cm-1. © 2007 Elsevier Ltd. All rights reserved.