Journal ArticleDOI
A simple, sensitive graphical method of treating thermogravimetric analysis data
TLDR
In this article, the authors presented 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.Abstract:
Thermogravimetric Analysis (TGA) is finding increasing utility in investigations of the pyrolysis and combustion behavior of materials. 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 tehniques, such as obtaining slopes on a rapidly changing curve. Included among the proposed procedures is one which permits a linear plot of TGA data. The sensitivity with which such 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.read more
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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.
Journal ArticleDOI
Thermally Stimulated Discharge of Polymer Electrets
TL;DR: In this paper, a special form of depolarization of polymer electrets is described, called thermally stimulated discharge (TSD), which enables one to determine, e.g., the glass-rubber transition of polymers.
Journal ArticleDOI
Thermal studies on natural and modified gums
M.J Zohuriaan,Fatemeh Shokrolahi +1 more
TL;DR: In this article, the authors used differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) under nitrogen atmosphere to determine major thermal transitions as well as activation energies of the major decomposition stages.
Journal ArticleDOI
Characterization of raw and alkali treated new natural cellulosic fiber from Coccinia grandis.L
TL;DR: The improved properties of the alkali treated CGF indicate that it could be an appropriate material for reinforcement in polymer composites.
Journal ArticleDOI
Accelerated weathering of unbleached and bleached Kraft wood fibre reinforced polypropylene composites
TL;DR: In this paper, combined moisture/ultraviolet (UV) weathering performance of unbleached and bleached Kraft wood fibre reinforced polypropylene (PP) composites was studied. And the extent of the reduction found to be similar for both unbleach and bleach fibre composites.
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