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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.

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Citations
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Journal ArticleDOI

Kinetic model of the thermal pyrolysis of chrome tanned leather treated with NaOH under different conditions using thermogravimetric analysis.

TL;DR: A kinetic model was developed considering the effect of the three variables studied, i.e.: the NaOH solution concentration, the soaking time and the heating rate and it was successfully applied simultaneously to all the experimental data obtained.
Journal ArticleDOI

Thermal decomposition kinetics of glycine in nitrogen atmosphere

TL;DR: In this article, the non-isothermal decomposition kinetics of glycine were investigated using analyzer DTG-60 in dynamic nitrogen atmosphere with high heating rate of 10, 14, 18 and 22 Kmin −1.
Journal ArticleDOI

Kinetic Study of Pyrolysis of Castor Beans (Ricinus communis L.) Presscake: An Alternative use for Solid Waste Arising from the Biodiesel Production

TL;DR: In this article, the effects of temperature and of rate of heating on the kinetic parameters of pyrolysis of castor beans presscake, a byproduct generated in the biodiesel production process, were investigated by thermogravimetric analysis, and parameters were obtained from nonisothermal experiments.
Journal ArticleDOI

The regression of isothermal thermogravimetric data to evaluate degradation Ea values of polymers: A comparison with literature methods and an evaluation of lifetime prediction reliability

TL;DR: In this paper, a thermogravimetric (TG) analysis of four well known polymers, polyethylene (PE), polystyrene (PS), polycarbonate (PC), and poly(methyl methacrylate) (PMMA), at various temperatures (in the 473-533 K range), in isothermal heating conditions was performed.
Journal ArticleDOI

Synthesis of belite cement from nano-silica extracted from two rice husk ashes.

TL;DR: Highly impure BRHA is shown to be very suitable as a starting material for the low-temperature production of belite cement, especially in conjunction with calcium nitrate as the calcium source.
References
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Journal ArticleDOI

Kinetic Parameters from Thermogravimetric Data

A. W. Coats, +1 more
- 01 Jan 1964 - 
TL;DR: In this article, a thermocouple is used to measure the sample temperature in a Stanton HT-D thermobalance, the bead of which is positioned in or near the sample, depending on crucible design.
Journal ArticleDOI

Kinetic analysis of thermogravimetric data

TL;DR: The kinetic analysis of the thermogram, by use of either its exact equation or a more convenient approximation formula, is straightforward in cases of volatilization via simple kinetics as mentioned in this paper.
Journal ArticleDOI

Estimating isothermal life from thermogravimetric data

TL;DR: In this paper, the authors presented a method for estimating equivalent isothermal life from thermogravimetric data and for estimating the apparent activation energy for volatilization even though the nature of the kinetic process is unknown.
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