Open AccessNon-isothermal Kinetic Study ofp-Cresol-Dithiooxamide-Formaldehyde Terpolymer
Author(s) -
Wasudeo B. Gurnule,
S. S. Katkamwar
Publication year - 2009
Publication title -
journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2090-9063
pISSN - 2090-9071
DOI - 10.1155/2010/858327
Subject(s) - formaldehyde , copolymer , frequency factor , activation energy , isothermal process , standard molar entropy , fourier transform infrared spectroscopy , monomer , thermal stability , thermodynamics , chemistry , kinetic energy , kinetics , thermal analysis , polymer chemistry , decomposition , thermal decomposition , order of reaction , reaction rate constant , thermal , chemical engineering , organic chemistry , polymer , standard enthalpy of formation , physics , quantum mechanics , engineering
Terpolymer (p-CDF) has been prepared by using the monomer p-cresol, dithiooxanude and formaldehyde in 1:1:2 molar proportions. The structure of p-CDF terpolymer has been elucidated on the basis of elemental analysis and various physicochemical technique like UV-visible, FTIR, 1H NMR and TG analysis. Detailed thermal degradation curve is discussed which shows four steps decomposition. The activation energy (Ea) and thermal stability calculated by using the Sharp Wentworth, Frceman-Carroll methods. Thermodynamics parameters such as entropy change (ΔS), apparent entropy change (S*) and frequency factor (z) have also been evaluated on the basis of the data of Freeman-Carroll method. The order of reaction (n) is found to be 1.05
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