A breath of fresh air

Application of direct nonlinear regression from single TG curve to compounds undergoing simple and complex thermal decompositions

“…Endrin shows a R2 mechanism (E = 65 kJ mol −1 ). Heptachlor (E = 63 kJ mol −1 ) and endosulfan (E = 70 kJ mol −1 ), which undergo volatilization processes without decomposition [12], show R1 mechanism in accordance with results obtained by Dollimore for a nonactivated process [32].…”

Vapor pressures and standard molar enthalpies, entropies and Gibbs energies of sublimation of three 4-substituted acetanilide derivatives

“…The consistency of the vapor pressure results above the liquid (melted) substance measured by a thermobalance subjected to isothermal and nonisothermal conditions under a flowing inert gas atmosphere was tested in our previous vaporization studies on pesticides using recommended reference compounds (i.e., benzoic acid [4,11], succinic acid and salicylic acid [4], acetanilide [5] and ferrocene [7]). Extension of vapor pressure measurements above the solid using a more classical weighing torsion effusion technique [5,6,19] as well as the extensive use of TG reported in literature [11,[20][21][22][23][24] in deriving vapor pressure data demonstrated the methods reliability (at least in the pressure range between about 10 and 10 3 Pa).…”

Thermal analysis study of the interactions between acetaminophen and excipients in solid dosage forms and in some binary mixtures

“…Moreover, vaporization kinetics, which is based on a constant area of reaction interface, is a zero-order process for which f(α) = 1 [15]. The explicit temperature dependence [16] of the rate constant is introduced by replacing the k vap vaporization coefficient with the Arrhenius equation, which gives…”