scispace - formally typeset
Open AccessJournal ArticleDOI

A New Method of Analyzing Thermogravimetric Data

Takeo Ozawa
- 01 Nov 1965 - 
- Vol. 38, Iss: 11, pp 1881-1886
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
More filters
Journal ArticleDOI

ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data

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

T. Ozawa
- 01 Mar 1971 - 
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
More filters
Journal ArticleDOI

The kinetics of the thermal degradation of polystyrene and polyethylene

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

Per Kofstad
- 29 Jun 1957 - 
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

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.
Related Papers (5)