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Biodiesels from beef tallow/soybean oil/babassu oil blends

Correlation between fluid dynamic properties and TMDSC data

Journal of Thermal Analysis and Calorimetry
Authors: G. A. A. Teixeira, A. S. Maia, I. M. G. Santos, A. L. Souza, A. G. Souza, and N. Queiroz

obtained from the temperature-modulated differential scanning calorimetry (TMDSC) curves. Experimental Biodiesel synthesis In the synthesis of the biodiesel samples, different amounts of beef tallow, babassu

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Journal of Thermal Analysis and Calorimetry
Authors: Cheng-Li Jiao, Li-Fang Song, Chun-Hong Jiang, Jian Zhang, Xiao-Liang Si, Shu-Jun Qiu, Shuang Wang, Li-Xian Sun, Fen Xu, Fen Li, and Ji-Jun Zhao

[ 17 , 18 ]. Temperature-modulated differential scanning calorimetry (TMDSC) is one of easier and more accurate methods for determining heat capacity [ 19 ]. TMDSC was initially proposed in 1992 by Reading and co-workers [ 20 ]. TMDSC which applies a

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Journal of Thermal Analysis and Calorimetry
Authors: Yi-Xi Zhou, Li-Xian Sun, Zhong Cao, Jian Zhang, Fen Xu, Li-Fang Song, Zi-Ming Zhao, and Yong-Jin Zou

differential scanning calorimetry (TMDSC) is one easy and accurate method for determining heat capacity [ 8 ]. The structure and principle of the calorimeter have been described in references [ 9 – 11 ]. Nowadays, this method has been fully developed for

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important for both theoretical and practical purposes. Heat capacities determinations of various compounds have attracted many researchers’ attention [ 21 – 26 ]. Temperature modulated differential scanning calorimetry (TMDSC) is one of easier and

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. Temperature modulated differential scanning calorimetry (TMDSC) is one of the easiest and very accurate methods for determining heat capacities. This method has been extensively developed for a straightforward determination of heat capacities for various MOF

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Journal of Thermal Analysis and Calorimetry
Authors: Javier Tarrío-Saavedra, Carlos Gracia-Fernández, Jorge López-Beceiro, Salvador Naya, and Ramón Artiaga

temperature modulated differential scanning calorimetry (TMDSC) technique, is suggested for identifying and characterizing the organic–inorganic interphase produced in nanomaterials such as fumed silica-filled epoxy and thermoplastic polyurethane (TPU

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Abstract  

Temperature modulated differential scanning calorimetry (TMDSC), the most recent development that adds periodic modulation to the conventional DSC, has recently seen a fast growth due to availability of commercial instrumentation. The use of the technique necessitates a total control of all of the experimental parameters. The paper focuses on recent applications to investigate polymers [1].

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Abstract  

The non-equilibrium process due to irreversible heat exchanges occurring during a temperature modulated differential scanning calorimetry (TMDSC) experiment is investigated in detail. This enables us to define an experimental frequency dependent complex heat capacity from this calorimetric method. The physical meaning of this dynamic heat capacity is discussed. A relationship is clearly established between the imaginary part of this complex quantity and the net entropy created during the experimental time-scale.

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Journal of Thermal Analysis and Calorimetry
Authors: H. Dantas, R. Mendes, R. Pinho, L. Soledade, C. Paskocimas, B. Lira, M. Schwartz, A. Souza, and Iêda Santos

Abstract  

Gypsum is a dihydrated calcium sulfate, with the composition of CaSO4⋅2H2O, with large application interest in ceramic industry, odontology, sulfuric acid production, cement, paints, etc. During calcination, a phase transformation is observed associated to the loss of water, leading to the formation of gypsum or anhydrite, which may present different phases. The identification of the phases is not so easy since their infrared spectra and their X-ray diffraction patterns are quite similar. Thus, in this work, temperature modulated differential scanning calorimetry (TMDSC) was used to identify the different gypsum phases, which can be recognized by their different profiles.

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Abstract  

The fragility of ethylene glycol and glucose aqueous solution systems has been investigated by temperature-modulated differential scanning calorimetry (TMDSC). The frequency and temperature dependences of complex specific heat have been observed in the vicinity of a glass-transition temperature T g . It is shown that the value of the fragility index m can be determined from the temperature dependence of the α-relaxation times observed by TMDSC. We have also studied the elastic properties of these aqueous solutions by micro-Brillouin scattering, and determined these relaxation times of elastic properties in the gigahertz range.

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