A New Method of Analyzing Thermogravimetric Data
TLDR
In this paper, a new method of obtaining the kinetic parameters from thermogravimetric curves has been proposed, which is simple and applicable to reactions which can not be analyzed by other methods.Abstract:
A new method of obtaining the kinetic parameters from thermogravimetric curves has been proposed. The method is simple and applicable to reactions which can not be analyzed by other methods. The effect of the heating rate on thermogravimetric curves has been elucidated, and the master curve of the experimental curves at different heating rates has been derived. The applications of the method to the pyrolyses of calcium oxalate and nylon 6 have been shown ; the results are in good agreement with the reported values. The applicability of the method to other types of thermal analyses has been discussed, and the method of the conversion of the data to other conditions of temperature change has been suggested. From these discussions, the definition of the thermal stability of materials has been criticized.read more
Citations
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ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data
Sergey Vyazovkin,Alan K. Burnham,José M. Criado,Luis A. Pérez-Maqueda,Crisan Popescu,Nicolas Sbirrazzuoli +5 more
TL;DR: In this article, the authors have developed recommendations for reliable evaluation of kinetic parameters (the activation energy, the preexponential factor, and the reaction model) from the data obtained by means of thermal analysis methods such as TGA, differential scanning calorimetry (DSC), and differential thermal analysis (DTA).
Journal ArticleDOI
Kinetics of non-isothermal crystallization
TL;DR: In this article, non-isothermal kinetics of nucleation and its growth are derived by extending Avrami's equation and applied to DSC curves of crystallization obtained by cooling poly(ethylene terephthalate) at constant rates.
Journal ArticleDOI
Kinetic analysis of derivative curves in thermal analysis
TL;DR: In this article, two methods of obtaining kinetic parameters from derivative thermoanalytical curves are proposed based on the general form of kinetic formulae and are applicable to general types of reactions governed by a single activation energy.
Journal ArticleDOI
Lignocellulosic biomass pyrolysis mechanism: A state-of-the-art review
TL;DR: A broad review of the state-of-the-art biomass pyrolysis research can be found in this article, where three major components (cellulose, hemicellulose and lignin) are discussed in detail.
Journal ArticleDOI
Thermal stability and flame retardancy of polyurethanes
TL;DR: The thermal stability and flame retardancy of polyurethanes is reviewed in this article, where a detailed description of TGA, TGA-MS and TGAFTIR methods for studying the decomposition mechanism and kinetics is also provided.
References
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Journal ArticleDOI
Estimating Thermal Stability of Experimental Polymers by Empirical Thermogravimetric Analysis
Journal ArticleDOI
The kinetics of the thermal degradation of polystyrene and polyethylene
David A. Anderson,Eli S. Freeman +1 more
TL;DR: The nonisothermal method of Freeman and Carroll was used to investigate the kinetics of the thermal degradation of polyethylene and polystyrene and the results of this investigation are compared with the kinetic parameters reported by other investigators as mentioned in this paper.
Journal ArticleDOI
Oxidation of Metals: Determination of Activation Energies
TL;DR: In this article, the activation energies of metal and alloy alloys were investigated and the reported values often show large mutual disagreements for the same metal for different classes of alloys and alloys.
Journal ArticleDOI
Thermal stability indices for polymeric materials based on energy considerations
Leo Reich,David W. Levi +1 more
TL;DR: In this article, an analysis of thermogravimetric weight loss data from the literature indicated correlations between the overall energietics of decomposition and characteristics of the thermodynamic curves for measurements made under nitrogen.
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