Synthesis and Characterization of Novel Organosoluble and Thermally Stable Polyesters Derived from Bis-[(4'- hydroxybenzyl)-4-benzamide] ether
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 7
Abstract
A novel bisphenol, containing preformed aromatic-aliphatic amide, ether and methylene linkages; Bis-[(4'-hydroxybenzyl)-4-benzamide] ether (BHBE) was synthesized by the reaction of 4-hydroxy phenyl acetic acid with Bis-(4-aminophenyl) ether (ODA). The bisphenol (BHBE) was characterized by FT-IR, 1H NMR, 13C NMR and mass spectrometry. A new series of polyesters was prepared by low temperature interfacial polycondensation of BHBE with different mole proportions of isophthaloyl chloride (IPC) and terephthaloyl chloride (TPC). The resulting polyesters were characterized by FT-IR spectroscopy, inherent viscosity [ηinh], solubility, differential scanning calorimetry [DSC], thermo gravimetric analysis [TGA] and X-ray diffraction [XRD]. All these polyesters showed good solubility and easily dissolved in polar aprotic solvents like NMP, DMSO, DMAC, DMF etc. The viscosity of polyesters was in the range of 0.49 to 0.79 dL/g. Polyesters were semicrystalline in nature; as evidenced by XRD patterns; and exhibited glass transition temperatures between 237-299oC, no weight loss upto 300oC and char yields of 19-33% at 800 oC under nitrogen atmosphere. These polyesters have potential applications as spin coating materials.
Authors and Affiliations
A. V. Diwate, R. G. Bhorkade, N. N. Maldar
Keywords
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