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    Author(s): Abraham Broido
    Date: 1969
    Source: Journal of Polymer Science, Part A-2, 7:1761-1773
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (501.31 KB)

    Description

    Thermogravimetric Analysis (TGA) is finding increasing utility in investigations of the pyrolysis and combustion behavior of materuals. Although a theoretical treatment of the TGA behavior of an idealized reaction is relatively straight-forward, major complications can be introduced when the reactions are complex, e.g., in the pyrolysis of cellulose, and when experimental imperfections arise. Consequently, a fairly large number of analytical methods have been proposed for obtaining kinetic parameters from TGA curves. Among the proposed methods are several graphical procedures, mostly involving relatively inaccurate techniques, such as obtaining slopes on a rapidly changing curve. Included among the proposed procedires is one which permits a linear plot of TGA data. The sensitivity with which sich a plot can be used to identify and correct for a variety of experimental complications seems to have escaped even the proponents of the techniques. This paper provides an illustration of the use of this graphical procedure in a hypothetical first-order pyrolysis typical of those occurring in the TGA behavior of cellulose.

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    Citation

    Broido, Abraham. 1969. A simple, sensitive graphical method of treating thermogravimetric analysis data. Journal of Polymer Science, Part A-2, 7:1761-1773.

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