Journal ArticleDOI
Rational approximations of the integral of the Arrhenius function
G. I. Senum,Ralph T. Yang +1 more
Reads0
Chats0
TLDR
Rational approximations have been derived for the integral of the Arrhenius function dT which is important in the kinetic analysis of thermogravimetric data and is found to be equivalent to the Gorbachev approximation.Abstract:
Rational approximations have been derived for the integral of the Arrhenius function
$$\int\limits_0^T {\exp ( - E/RT)}$$
dT which is important in the kinetic analysis of thermogravimetric data. The first degree rational approximation is found to be equivalent to the Gorbachev approximation, i.e., RT2
exp (−E/RT)/(E+2RT). The second degree rational approximation is more accurate than the Zsako empirical approximation when E/RT 5. The third and higher degree rational approximations are found to be more accurate than any other previous approximation.read more
Citations
More filters
Journal ArticleDOI
Kinetic and thermodynamic investigations of non-isothermal decomposition process of a commercial silver nitrate in an argon atmosphere used as the precursors for ultrasonic spray pyrolysis (USP): The mechanistic approach
TL;DR: In this paper, a non-isothermal decomposition of commercial silver nitrate used as the precursor for the USP procedure was investigated by simultaneous TGA-DTA measurements at different heating rates, in an argon atmosphere.
Journal ArticleDOI
Model-fitting kinetic analysis of novel phosphorus-containing curing agent for epoxy resin
TL;DR: In this article, a hyper branched modified-amine curing agent N,N,N-tris(4-amino-diphenylmethane) Phosphoric Triamide (TEPDDMs) was prepared by one-step way with 4, 4-diaminodiphenymethane (DDM) and triethyl phosphate (TEP) as raw materials.
Journal ArticleDOI
Optical and kinetics of thermal decomposition of PMMA/ZnO nanocomposites
TL;DR: In this paper, the effect of ZnO on the morphology, optical properties and thermal degradation kinetics of PMMA was investigated by means of XRD, TEM, FTIR, TG-DSC, photoluminescence (PL) spectra and UV-visible absorption spectra.
Journal ArticleDOI
Thermal stability of habit modified ammonium nitrate: Insights from isoconversional kinetic analysis
TL;DR: In this article, the thermal stability and moisture absorption characteristics of phase modified ammonium nitrate (PMAN) were evaluated to understand the viability of its application in the environmentally benign propellant systems.
Journal ArticleDOI
Kinetics of the crosslinking reaction of nonionic polyol dispersion from terpene-maleic ester-type epoxy resin
TL;DR: In this paper, the authors investigated the bulk crosslinking reaction kinetics of a novel two-component waterborne polyurethanes (2K-WPUs) composed of a bio-resin-based polyol dispersion and a hydrophilically modified hexamethylene diisocyanate tripolymer.
References
More filters
Journal ArticleDOI
Kinetic Parameters from Thermogravimetric Data
A. W. Coats,J. P. Redfern +1 more
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
Empirical formula for the exponential integral in non-isothermal kinetics
TL;DR: The exponential integral of the exponential integral can be approximated by means of the empirical formula, e.g. as mentioned in this paper, which approximates p(x) = - \int\limits_\infty ^x {\frac{{e^{ - u} }}{{u^2 }}} \cdot du\).
Journal ArticleDOI
Reaction kinetics and differential thermal analysis
Ralph T. Yang,Meyer Steinberg +1 more
TL;DR: In this paper, the relationship between chemical kinetics and differential thermal analysis (DTA) curves is studied for the reactions which follow the general rate expression: r = r/sub 0/e/sup -E/RT/(1 - x).