Thermal Analysis

Vyazovkin, Sergey

doi:10.1021/ac020219r

Cited by 58 publications

(26 citation statements)

References 176 publications

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“…As discussed in section 6, the majority of the works in this field presents kinetic calculations without a reliable comparison of the resulting models to the experimental data. There are recent reviews in the field that do not emphasize the necessity of a model validation by checking the fit between the experiments and the data predicted from the model [2,3]. On the other hand, there are overviews that treat this point in details and give recommendations for the use of the method of least squares to obtain models that fit well the experiments [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Aims and methods in non-isothermal reaction kinetics

Várhegyi

2007

Journal of Analytical and Applied Pyrolysis

124

113

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The majority of the works dealing with non-isothermal kinetics assumes only one kinetic differential equation, uses linearization techniques and do not check the fit between the simulated and the experimental data. It is not clear from the literature why we need kinetic evaluations at all in this field. Due to this controversial situation, the author has outlined his views on the aims and methods of the non-isothermal kinetics in this paper. Accordingly, the goal of the kinetic evaluation is to obtain better, more informative results from the experiments. If realistic models are used, numerous unknown parameters have to be determined during the evaluation. Since the most important errors of thermal analysis are not random, the laws of the mathematical statistics do not offer means to find the best set of model parameters. Nevertheless, the simultaneous evaluation of a series of thermoanalytical experiments by the method of least squares aims directly at the description of the sample behavior in a wide range of experimental conditions and helps the determination of a large number of unknown parameters. The outlined considerations are supported by examples from the work of the author and his coworkers. As a comparison, a statistical survey is given on those papers that were published in journals specialized for thermal analysis, thermochemistry and pyrolysis in 2006 and contained the term "kinetic" or "kinetics" in their titles.

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Section: Introductionmentioning

confidence: 99%

Aims and methods in non-isothermal reaction kinetics

Várhegyi

2007

Journal of Analytical and Applied Pyrolysis

124

113

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“…This dependence of E on ˛ for a sample is an indication of a complex reaction with the participation of at least two different mechanisms. Although the "two mechanisms" is a rather typical phenomenon for many polymers [35,36], this conclusion is based on the multistep TG curve. However, this is not clear in our study of the polyester and the conclusion is extracted mainly from the dependence of E versus ˛.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 97%

Synthesis and degradation kinetics of a novel polyester containing bithiazole rings

Luyt

et al. 2011

Thermochimica Acta

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“…Differential scanning calorimetry (DSC) is the most effective method to study the behavior of epoxy curing, including isothermal and non-isothermal method [4]. In this paper, we selected DER331 bisphenol A epoxy resin, curing agent is a modified amine DEH622, the use of non-isothermal DSC method and phenomenological model to study the curing kinetics and curing process [5,6], with a view of the epoxy curing process to provide more valuable theoretical guidance.…”

Section: Introductionmentioning

confidence: 99%

Curing reaction mechanism of Bisphenol A (BPA) epoxy by way of non-isothermal DSC and phenomenological model

Zhao¹,

Liu²

2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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Studied the curing reaction of bisphenol A epoxy resin DER331 system by the way of non-isothermal DSC and phenomenological model, using n-stage reaction and phenomenological model determined the curing kinetics equation, the results showed when the ratio of the epoxy resin DER331 and curing agent was 100:30, the activation energy Ea = 46950J / mol, frequency factor A= 2.08 × 10 6 / S, the reaction order of n= 0.89.

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Thermal Analysis

Cited by 58 publications

References 176 publications

Aims and methods in non-isothermal reaction kinetics

Aims and methods in non-isothermal reaction kinetics

Synthesis and degradation kinetics of a novel polyester containing bithiazole rings

Curing reaction mechanism of Bisphenol A (BPA) epoxy by way of non-isothermal DSC and phenomenological model

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