Author
M. D. Judd
Bio: M. D. Judd is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 13 citations.
Papers
More filters
TL;DR: In this paper, the authors present a review of these methods and introduce a new approach by which n andk can be obtained directly, giving results which are unique and objective in that they provide a best fit to the experimental data.
Abstract: The kinetics of many solid state reactions can best be explained in terms of an order of reaction; this is particularly true in the case of polymer degradation. The methods currently available for the determination ofn andk, from isothermal data, are either limited in the range ofα which can be used or are difference-difference techniques where the data must of necessity be highly accurate. This paper presents a review of these methods and introduces a new approach by whichn andk can be obtained directly, giving results which are unique and objective in that they provide a best fit to the experimental data.
13 citations
Cited by
More filters
TL;DR: In this article, a software is described enabling kinetic analysis under non-isothermal or isothermal conditions from DSC, or from TG data, with thirteen methods of kinetic analysis, three for isothermal analysis and two for TG, with eight different functions for the choice of the proper mechanism for each of them.
Abstract: A software is described enabling kinetic analysis under non-isothermal or isothermal conditions from DSC, or from TG data. The program offers thirteen methods of kinetic analysis for DSC, three for isothermal analysis and two for TG, with eight different functions for the choice of the proper mechanism for each of them.
60 citations
TL;DR: In this paper, the authors present a method for the derivation of kinetic parameters for non-isothermal decomposition of solids in terms of Arrhenius pre-exponential factor, activation energy and reaction order.
45 citations
TL;DR: In this paper, the authors used the weighted least-squares method with the equation g(α) = kt + b and using criteria based on the minimization of the difference between α exp and α calc.
34 citations
TL;DR: In this paper, the feasibility of a modified Solvay ammonia soda process which delivers Na2CO3 and HCl by using exhaust CO2, NaCl and H2O was investigated and the principle of a simple solar thermo-chemical reactor was described.
16 citations
TL;DR: In this paper, the performance of a variety of numerical methods applied to the determination of the rate constant and order of contracting interface reactions in the solid state was discussed, including direct search, Hooke and Jeeves, and Gauss-Newton technique of non-linear least squares.
Abstract: This paper discusses the performance of a variety of numerical methods applied to the determination of the rate constant and order of contracting interface reactions in the solid state. The methods studied are (a) a direct search method proposed by Varhegyi, (b) a modification of Varhegyi's method which involves a unidimensional search, (c) the direct search procedure of Hooke and Jeeves and (d) the Gauss-Newton technique of non-linear least squares. The results demonstrate that the modified strategy (b) is by far the most efficient of the three direct search methods but that the non-linear least squares technique is superior in performance to any of the direct search methods.
5 citations