Showing papers in "Thermochimica Acta in 2013"

TL;DR: In this article, the solubility of carbon dioxide in a eutectic mixture containing choline chloride and ethylene glycol was determined for temperatures 303.15-343.15 K and pressures up to 6 MPa using a thermogravimetric microbalance.

TL;DR: In this paper, a composite paraffin-based phase change material (PCM) was prepared by blending two forms of Paraffin and calcined diatomite through the fusion adsorption method, and the optimum mixed proportion with a suitable phase transition temperature was obtained through differential scanning calorimetry (DSC) analysis.

TL;DR: In this paper, the authors used isothermal conduction calorimetry (ICC) to characterize the geopolymerization kinetics of metakaolin activated with sodium silicate.

TL;DR: In this article, a thermogravimetric curve overlap ratio was applied to evaluate the simulation of biomass by hemi-cellulose, cellulose and lignin.

TL;DR: In this paper, a set of experimental curves recorded under different heating schedules, i.e., linear heating rate, isothermal and constant rate thermal analysis (CRTA), has been analyzed using isoconversional and master plots methodology to discriminate the kinetic model followed by the reaction.

TL;DR: Two methods were presented for the model-free computation of the pre-exponential factor dependency using kinetic compensation parameters and isoconversional methods, which give accurate results for both single and multi-step kinetics.

TL;DR: In this paper, a selection of the two most common phase change materials (paraffin and salts hydrates) was performed to conduct measures with the two DSC operation modes.

TL;DR: This study carefully looks at the advantages, the drawbacks and underlying assumption of each approach used for conversion of isothermal microcalorimetry data into biologically meaningful data such as growth rate, lag phase, or maximum growth.

TL;DR: In this article, the phase change behavior of newly prepared stearic acid-TiO2 nanofluids as composite phase change materials (PCMs) was investigated, and the complete melting and solidification times were reduced by 7.03, 12.56, 19.62, 13.57, 20.53, 26.82, 34.17, 43.64, 35.39% for 0.

TL;DR: In this paper, the formation of microencapsulated phase change materials (MEPCMs)-PMMA/Na2HPO4·7H2O was investigated and analyzed.

TL;DR: In this article, the effect of different MgO and silica sources on the formation of magnesium silicate hydrate (MSH) at room temperature was investigated, and it was found that the Mg and Si sources have significant effect on the hydration process of Mg-SiO2-H2O system.

TL;DR: In this paper, a graphite-filled polyamide 6/polycarbonate (PA6/Polycarbonate) composite with a mass proportion of 7/3 was prepared by twin screw extruding.

TL;DR: In this article, the crystallization behavior of polypropylene/exfoliated graphite nanocomposites prepared by melt compounding was analyzed using differential scanning calorimetry (DSC).

TL;DR: In this paper, the performance of Al-Si and Al-Cu eutectic phases with addition of bismuth, antimony and strontium was investigated in ADC12 alloy using in situ thermal analysis.

TL;DR: In this article, two Turkish crude oils from southeastern part of Turkey and their saturate, aromatic and resin fractions were analyzed by thermogravimetric analysis (TGA), the experiments were performed at three different heating rates (5, 10, 15 ) under air atmosphere.

TL;DR: In this article, a ball milling process was used to modify microstructurally the Li4SiO4, and different structural and microstructural analyses were performed, followed by an analysis of the CO2 chemisorption process.

TL;DR: In this article, a co-precipitation technique was used to synthesize a mixture of Ca 2 Al(OH) 6 ]Cl 0.90 (CO 3 ) 0.05 ·2H 2 O, close to that of Friedel's salt (FS).

TL;DR: In this paper, the reaction and phase composition in the MgO-SiO 2 -H 2 O phase system was studied and analyzed by DTA-TGA-EGA and XRD after ageing for 1, 3, 10, 30 and 180 days at 20°C.

TL;DR: In this article, the surface area and pore size of natural goethite microcrystals were analyzed using Fourier transform infrared emission spectroscopy (FT-IES) and nitrogen-adsorption-desorption analysis.

TL;DR: In this paper, the authors developed experimental as well as theoretically based hierarchical multiscale procedures for the evaluation of effective elastic modulus and thermal conductivity of poly-lactide (PLA)/expanded graphite (EG) nanocomposites.

TL;DR: In this article, the thermal stability of the eutectic LiNO 3 -NaNO 3 −KNO 3 salt was investigated by simultaneous differential scanning calorimetry, thermogravimetry and mass spectrometry (DSC/TG-MS).

TL;DR: Li et al. as mentioned in this paper proposed a modified Li-Qu-Feng model to predict thermal conductivity of VFBNs containing multwalled carbon nanotubes (MWCNTs) to obtain a novel thermo-fluid with both turbulent drag reducing and heat transfer enhancement.

TL;DR: In this paper, partial molar expansibilities V E o (V E o = ( ∂ V 2 o / ∂ T ) P ), second order derivative ( ∆ 2 V 2 O / ∆ T 2 ) P and solvation number (Sn) have been calculated.

TL;DR: In this paper, the hydration and dehydration behavior of CaCl2 at different partial vapor pressures were investigated. But, only few chemical reactions have been characterized sufficiently for this application, and only one of them is considered as a reference material for thermochemical storage in the temperature range studied.

TL;DR: In this paper, the thermal and flow fields in a trapezoidal grooved microchannel heat sink (TGMCHS) using nanofluids were investigated using the finite volume method.

TL;DR: In this paper, the authors presented polyacrylonitrile (PAN)/hexagonal boron nitride (h-BN) composites with improved flame retardancy and thermal stability.

TL;DR: In this article, wide-angle X-ray scattering (WAXS) has been applied for analysis of the polymorphism of isotactic polypropylene and polyamide 6 prepared in a fast scanning chip calorimeter (FSC).

TL;DR: In this article, financial support for this investigation has been provided by the Spanish “Secretaria de Estado de Investigacion” del Ministerio de Economia y Competitividad (MAT2011-24991) and by the Generalitat Valenciana (PROMETEO/2012/015).

TL;DR: In this article, a Redlich-Mayer equation was fitted to the apparent molar volume and apparent morthogonal isentropic compressibility data for the binary ionic liquid (IL): methyltrioctylammoniumbis(trifluoromethylsulfonyl)imide ([MOA]+[Tf2N]−]−).

TL;DR: In this article, the effects of using various types of nanofluids and rotation on heat transfer and fluid flow characteristics in a helically coiled tube heat exchanger (HCTHE) are numerically investigated.