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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

Pyrolysis characteristics of polystyrene and polypropylene in a stirred batch reactor

TL;DR: In this paper, a thermogravimetric analysis (TGA) technique was used for pyrolysis of polystyrene (PS) and polypropylene (PP) at the heating rate of 0.5, 1.0, and 2.0°C min −1 in a stirred batch reactor.
Book

Textile Coloration and Finishing

TL;DR: In this paper, the authors discuss the laws of absorption of light by transparent and opaque objects, the Munsell and CIE color order systems, CIELab color space, and expression of color differences.
Journal ArticleDOI

Effect of comonomer structure on the stabilization and spinnability of polyacrylonitrile copolymers

TL;DR: In this article, three bifunctional comonomers were synthesized to prepare poly(acrylonitrile-co-β-methylhydrogen itaconate) [P(co-MHI)], poly(acetylacetyl-carboxylate-3-butenoic acid methyl ester] [P (co-ACBM)] which can be used as carbon fiber precursor, and the effect of comonomer structure on the stabilization of bipolymers were studied by Fourier transform infrared spectroscopy, X-ray diffraction, differential
Journal ArticleDOI

Thermal degradation of biodegradable edible films based on xanthan and starches from different sources

TL;DR: In this article, the FTIR spectra of the gaseous products during thermal degradation of xanthan showed a broad absorption in the 2750-3300 cm −1 region.
Journal ArticleDOI

Pyrolysis of banana leaves biomass: Physico-chemical characterization, thermal decomposition behavior, kinetic and thermodynamic analyses.

TL;DR: Results showed that average activation energy ranges between 70.75 and 92.12 kJ/mol for the studied isoconversional model-free methods, and pre-exponential factor obtained from Kissinger method was found to vary from 107 to 1033 s-1.
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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