New Polymer Synthesis VI: Synthesis, Characterization and Morphology of New Polyoxaloylesters Derived from Diarylidenecycloalkanones

New polyoxaloylesters have been synthesized via interfacial polycondensation of oxaloyl chloride with 2,5-bis( p-hydroxybenzylidene)cyclopentanone I, 2,5-divanillylidenecyclopentanone II, 2,6-bis( p-hydroxybenzylidene)cyclohexanone III, 2,6-divanillylidenecyclohexanone IV, and 2,7-bis( p-hydroxybenzylidene)cycloheptanone V at ambient temperature. These polyoxaloylesters were characterized by elemental analysis, IR spectra, 1 H NMR, solubility measurements, viscometry, DSC and thermogravimetric analyses. The crystallinity of the polymers was examined by x-ray analysis. The morphology of a high-performance polyoxaloylester, namely poly[oxyoxaloyloxy- p-phenylenemethylidyne (2-oxo-1,3-cyclohexanediylidene)methylidyne- p-phenylene], has been investigated by scanning electron microscopy. Electrical conductivity is in the range 10 −11 -10 −13 Ω −1 cm −1 .