Thermal Degradation Studies and Kinetic Parameters of Biphenol-Hexamethylenediamine-Formaldehyde Terpolymer

Dr. Priyanka Belsare

Abstract: In the present research paper reports the thermal degradation studies of 2,2?-Biphenol (2,2?-BP), Hexamethylenediamine (HMDA) with Formaldehyde (F) (2,2?BPHMDAF-II) terpolymer. Terpolymer has been synthesized by the condensation of 2,2?-Biphenol and Hexamethylenediamine with formaldehyde in presence of 2M HCl as a catalyst using 1:2:4 molar ratios at temperature 150 0C. The terpolymer after purification was characterized by elemental analysis and spectral studies such as UV-Visible, FT-IR and 1H-NMR spectra which were used to elucidate and confirmed the most probable structure of synthesized terpolymer. The synthesized terpolymer was then further characterized by different physico-chemical techniques viz. Number average molecular weight determines by Non-aqueous Conductometric titration and Intrinsic viscosity by Ubbelohde Viscometer. The thermogravimetric study of the prepared terpolymer has been carried out by non isothermal thermogravimetry technique. Freeman-Carroll and Sharp-Wentworth methods have been applied for the calculation of kinetic parameters. Thermal study of the terpolymer was carried out to determine their mode of decomposition and relative thermal stability by calculating activation energy, order of reaction and frequency factor. 2,2?-BPHMDAF-II terpolymer was synthesized to determine its thermal stability and which were proved to be thermally stable by studying above methods.

Keywords: Polycondensation reaction, Spectral studies, Physicochemical techniques