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Introduction The goal of the interpretation of thermal analysis is to extract all scientifically and technological important information from measurements of “temperature” and “heat.” The international system of units

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Journal of Thermal Analysis and Calorimetry
Authors:
Maurizio Ferrante
,
Paolo Trentini
,
Fausto Croce
,
Morena Petrini
, and
Giuseppe Spoto

their study, have shown the same complex polymeric structures. The thermal analysis is a very useful technique in order to check the quality of different commercial products and to perform a comparative analysis. In particular, it is very useful

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interesting to apply these techniques to the identification and quantification of compounds and mixtures in chemical processes. On the other hand, a number of analytic methods are used for thermal analysis [ 5 ], including thermogravimetry

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Journal of Thermal Analysis and Calorimetry
Authors:
Cheila G. Mothé
,
Michelle G. Mothé
,
Alan T. Riga
, and
Kenneth S. Alexander

as a predictive model for human skin behavior. The present study focuses on evaluation of the attributes of some shedded snake skins in comparison with human skin by thermal analysis. Experimental Samples

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study is to investigate the kinetics of the dehydroxylation of Algerian kaolinite through thermal analysis. Materials and experimental procedure Raw kaolinite (DD3, from Guelma, Algeria) was used in this investigation. More

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purity of the synthesized samples were characterized by powder X-ray diffraction using conventional powder techniques in diffractometer (D8 Bruker, GB) with Cu K λ radiation. Thermal gravimetric analysis/differential thermal analysis was

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Humidity controlled thermal analysis

The effect of humidity on thermal decomposition of zinc acetylacetonate monohydrate

Journal of Thermal Analysis and Calorimetry
Authors:
T Arii
and
A Kishi

Abstract  

The low temperature formation of crystalline zinc oxide via thermal decomposition of zinc acetylacetonate monohydrate C10H14O4ZnH2O was studied by humidity controlled thermal analysis. The thermal decomposition was investigated by sample-controlled thermogravimetry (SCTG), thermogravimety combined with evolved gas analysis by mass spectrometry (TG-MS) and simultaneous differential scanning calorimetry and X-ray diffractometry (XRD-DSC). Decomposition of C10H14O4ZnH2O in dry gas by linear heating began with dehydration around 60C, followed by sublimation and decomposition above 100C. SCTG was useful because the high-temperature parallel decompositions were inhibited. The decomposition changed with water vapor in the atmosphere. Formation of ZnO was promoted by increasing water vapor and could be synthesized at temperatures below 100C. XRD-DSC equipped with a humidity generator revealed that C10H14O4ZnH2O decomposed directly to the crystalline ZnO by reacting with water vapor.

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Journal of Thermal Analysis and Calorimetry
Authors:
Robson Miranda da Gama
,
Tatiana Santana Balogh
,
Simone França
,
Tânia Cristina Sá Dias
,
Valcinir Bedin
,
André Rolim Baby
,
Jivaldo do Rosário Matos
, and
Maria Valéria Robles Velasco

agents [ 13 ]. Several authors researched the thermal analysis applied on human hair were executed thermogravimetric (TG) and Differential Scanning Calorimetry (DSC) analysis to purpose of verify keratin structural changes occur in shaft hair

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method is based on the following equation [ 8 ]: 6 Objective The objective of the present study is to investigate the kinetic parameters of thermal degradation through thermal analysis behavior of three

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Controlled-rate thermal analysis

Study of the process of super hard material debinding

Journal of Thermal Analysis and Calorimetry
Authors:
Tadashi Arii
,
Kiyoshi Terayama
, and
Nobuyuki Fujii

Binder burnout has been carried out by a controlled heating programme which depends on the composition of the binder system used. The present paper gives the principle of constant decomposition rate thermogravimetry, which falls within controlled-rate thermal analysis, and the advantage of this technique when evolved gas analysis is used in discriminating the process of super hard material burnout by comparison with the conventional linear heating method is described. In this technique, the sample temperature is varied to maintain a constant rate of mass loss by control of the heating of the infrared image furnace. Since the constant decomposition rate control (CDRC) allows a much better control of the sample environment, which generally depends on the rate of gas evolution, it is possible for uniform conditions to exist throughout the sample, and the total burnout time can be reduced considerably without crack formation. The efficiency of this CDRC was proved by the obtained temperaturevs. time curve and SEM observations of the heat-treated sample after the debinding process.

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