Structural and Thermokinetic study of polyamide derived from2, 6 -diaminopyridine and terphthalic acid (original) (raw)

2012

Abstract

The resin, DAPT, was synthesized by condensing 2, 6-Diaminopyridine (0.1M) and terphthalic acid (0.1M) in presence of DCC (Dicyclohexylcarbodiimide). The tentative structure of resin was assigned by elemental analysis, 1H NMR, 13 C NMR, FT-IR and UV-VIS spectra. The molecular weight of resin was determined by non aqueous conductometric titration. The thermo kinetic parameters such as apparent entropy (ΔS), frequency factor (A), free energy change (ΔG) and orders of reaction were determined by Freeman Carroll (FC) and Sharp Wentworth (SW) methods. The order of degradation determined by FC method was confirmed by SW method

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