Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

header
Reach Us reach to JOCPR whatsapp-JOCPR +44 1625708989
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Original Articles: 2012 Vol: 4 Issue: 1

Synthesis, Spectral Characterization and Kinetic study of 8-hydroxyquinoline 5-sulphonic acid-melamine-Formaldehyde terpolymer resin

Abstract

The title terpolymer (8-HQ5-SAMF) synthesized by the condensation of 8-hydroxyquinoline 5-sulphonic acid (8- HQ5-SA) and melamine (M) with formaldehyde (F) in the presence of acid catalyst and using varied 3:1:5 molar proportions of the reacting monomers. The synthesized terpolymer characterized by different spectral techniques. The thermogravimetric analysis of terpolymer resin prepared in present study has been carried out by nonisothermal thermogravimetric analysis technique in which sample is subjected to condition of continuous increase in temperature at linear rate. Thermal study of the resin was carried out to determine the mode of decomposition and thermal stability. Thermal decomposition curve was studied carefully with minute details. The Freeman-Carroll and Sharp-Wentworth methods have been used in the present investigation to calculate thermal activation energy and different kinetic parameter of the terpolymer resin. Thermal activation energy (Ea) calculated with above two mentioned methods are in close agreement. The advantage of Freeman-Carroll method is to calculate both the order of reaction (n) and energy of activation in one single stage by keeping heating rate constant. By using data of thermogravimetric analysis, various thermogravimetric parameters like frequency factor (Z), entropy change (DS), free energy change (DF) and apparent entropy (S*) have been determined using Freeman-Carroll method.