Results 211 to 220 of about 3,094 (252)

Integral, differential and advanced isoconversional methods

Chemometrics and Intelligent Laboratory Systems, 2009
Nicolas Sbirrazzuoli, Luc Vincent, Alice Mija   +2 more
exaly   +2 more sources

Isoconversional vs. Model fitting methods

Journal of Thermal Analysis and Calorimetry, 2007
A Pratap, T Lilly Shanker Rao, Kirit N Lad   +2 more
exaly   +2 more sources

Vyazovkin’s isoconversional method as a universal approach

Thermochimica Acta, 2021
Abstract The widespread use of the Vyazovkin’s method in the analysis of thermal dissociation of the solid phase by isoconversional methods prompted consideration of views regarding the kinetic triplet. We examined published data of thermal dissociation conducted for seven heating rates in two versions: analytical, where the constant incorporating ...
Andrzej Mianowski, Marek Sciazko, Tomasz Radko   +2 more
openaire   +1 more source

Isoconversional methods as single-step kinetic approximation

Thermochimica Acta
Sergey Vyazovkin, Nicolas Sbirrazzuoli
exaly   +2 more sources

Isoconversional Methods in Thermodynamic Principles

The Journal of Physical Chemistry A, 2018
The thermodynamic aspects of the methods commonly used in thermogravimetric analysis, that is, isothermal and dynamic, are presented. Models for isoconversional variants of dynamic methods are accepted. For the thermal dissociation of the solid phase, the free enthalpy of the system, called the Gibbs free energy state, and the stoichiometric principles
A. Mianowski, W. Urbańczyk
openaire   +2 more sources

Practical application of isoconversional methods

Thermochimica Acta, 1992
Abstract The new possibilities offered by isoconversional methods as applied to the solution of practical kinetic problems are considered. These problems have been solved by algorithms based on the transformation-degree dependence of the activation energy calculated by the isoconversional method.
S.V. Vyazovkin, A.I. Lesnikovich
openaire   +1 more source

Thermal Denaturation of Collagen Analyzed by Isoconversional Method

Macromolecular Bioscience, 2007
AbstractAn isoconversional method is proposed to be used for evaluating activation energy of protein denaturation. Applied to DSC data on collagen denaturation, the method yields an activation energy that decreases throughout the process. The Lumry‐Eyring model gives an explanation for this decrease and affords estimates for the enthalpy of the ...
Sergey, Vyazovkin, Luc, Vincent, Nicolas, Sbirrazzuoli   +2 more
openaire   +2 more sources

Thermoset Cure Kinetics by Isoconversional Methods

Journal of Thermal Analysis and Calorimetry, 1999
The curing kinetics of thermosets based on unsaturated polyester resin crosslinked with styrene was studied by differential scanning calorimetry (DSC). The isoconversional kinetic analysis was applied to non-isothermal data. The results obtained show a dependence of the activation energy (Eα) on conversion (α) that proves the existence of a multistep ...
J. M. Salla, A. Cadenato, X. Ramis, J. M. Morancho   +3 more
openaire   +1 more source

Iterative linear integral isoconversional method: Theory and application

Bioresource Technology, 2012
In this work, the theory of the iterative linear integral isoconversional method was illustrated in detail. This method allows the dependence of the activation energy (Eα) on the conversion degree to be accurately determined in a short time. Moreover, the method can yield the term [Aαf(α)] (Aα: the frequency factor at conversion α, f(α): the reaction ...
Junmeng, Cai, Yong, Chen
openaire   +2 more sources

Isoconversional method in CRTA

Thermochimica Acta, 1997
Abstract This paper applies the advantage of isoconversional method to the new experimental arrangement of controlled rate thermal analysis (CRTA). The CRTA technique leads to a more effective control of heat and mass transfer phenomena such that much greater sensitivity can be achieved.
openaire   +1 more source