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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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Journal ArticleDOI

Relationship between processing conditions, defects and thermal degradation of poly(vinylidene fluoride) in the β-phase

TL;DR: In this paper, the influence of the processing methods in the thermal stability of polyvinylidene fluoride (PVDF) samples was studied by UV-VIS spectroscopy and thermogravimetric analysis.
Journal ArticleDOI

Kinetics of thermal degradation applied to starches from different botanical origins by non-isothermal procedures

TL;DR: In this paper, the authors used the non-isothermal isoconversional Wall-Flynn-Ozawa method on the TG/DTG curves to obtain the pre-exponential factor (0.10 − α ǫ − 0.70) for thermal degradation of corn, rice, potato and cassava starches.
Journal ArticleDOI

Investigation of co-combustion characteristics of sewage sludge and coffee grounds mixtures using thermogravimetric analysis coupled to artificial neural networks modeling

TL;DR: Artificial neural network modeling was applied to thermal data obtained by non-isothermal thermogravimetric analysis (TGA) from room temperature to 1000°C at three different heating rates in air to predict the TG curves of sewage sludge and coffee grounds mixtures and showed that there were interactions between SS and CG, and the impacts were mostly positive.
Journal ArticleDOI

Investigation on kinetics of thermal decomposition in polysiloxane networks used as precursors of silicon oxycarbide glasses

TL;DR: In this paper, polysiloxane networks prepared by hydrosilylation or hydrolysis/condensation reactions were considered to be potential precursors for Si-C-O systems.
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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