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Thermochimica Acta Journal

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Photosubstituted mixed ligand complexes of Co(II) with irradiated solutions of Mo(CN)84− and W(CN)84− with ethylenediamine have been synthesized. The complexes have been isolated and characterized by their elemental analysis and IR spectroscopy. The assigned formulae are Co2[Mo(C...
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The structural characteristics which determine the behaviour of solids under various conditions, especially during the interactions with other substances, are summarized.
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Excess molar enthalpies H E of binary mixtures containing chlorobenzene + five ethers (oxolane, oxane, 1,4-dioxane, dimethoxymethane and 1,2-dimethoxyethane) were determined at atmospheric pressure and at 298.15 K by means of a flow microcalorimeter. Experimental H E values were ...
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The objective of this study was to investigate the effects of some transition metal ions on the thermal behavior of polyurethane materials. The interaction products of a segmented polyesterurethane prepared from 4,4′-diphenylmethane diisocyanate, poly(ethylene-co-diethylene adipa...
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Biodegradable poly(butylene succinate-co-butylene adipate) (PBSA)/carboxyl-functionalized multi-walled carbon nanotubes (f-MWNTs) nanocomposites were prepared through solution casting method with different f-MWNTs contents ranging from 0.5 to 2 wt%. Scanning electron microscopic ...
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The statement: “A solid is a condensed phase at a temperature below its glass transition”, is an operational definition. It leads to the corollary that for crystals to be solid, they must be below their glass transition. In this paper evidence for the usefulness of this definitio...
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The binary phases and compatibilities of the BaO-CuO, YO1.5-BaO and YO1.5-CuO systems are discussed. The different variants of YBa2Cu3O7-y, are shown in dependence on y. So far reported existence of the ternary compounds (in the ratio Y:Ba:Cu) 1:3:2,1:4:3,1: :2:4,1:5:3,3:8:5,2:3:...
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A special case of the non-isothermal rate equation is derived for the evaluation of thermal gravimetry data when the measured weight loss from a sheet-like specimen is governed by a diffusion process as opposed to a homogenous chemical reaction. The equation is applied to the des...
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The adsorption of CO on alumina supported metal (Rh, Ru, Pt and Pd) catalysts was studied by microcalorimetry and infrared spectroscopy. The correlation of the results obtained from these two techniques provides information about the CO adsorbed species and the variations in the ...
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The thermodynamic behaviour of bulk metallic glass (BMG) forming melts have been studied by analyzing the temperature dependence of the Gibbs free energy difference (∆G), entropy difference (∆S) and enthalpy difference (∆H)between the undercooled melt and the corresponding equili...
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The chemistry and thermodynamics of vaporization of CdGa2S4(s), CdGa8S13(s), and Ga2S3(s) were studied by computer-automated, simultaneous Knudsen-effusion and torsion-effusion, vapor pressure measurements in the temperature range 967–1280 K. The vaporization was incongruent with...
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As the density of elemental sulfur was determined on slowly cooling from 508K, it was unexpected for the metastable molten state to be maintained to temperatures as low as 334K, thus expanding by about 20K the T-range within which experimental data become available. In the 334–43...
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Solvates of sulindac were obtained by crystallization from acetone, chloroform, dichloromethane and tetrahydrofuran, but not from water, methanol, ethanol and propanols, acetonitrile and ethyl acetate and were studied by thermal (differential scanning calorimetry DSC, thermogravi...
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Analysing literature data for the YBaCuO system, the values of H⊖298—H⊖0, and the temperatures of melting and decomposition were estimated and empirical equations for their calculation are discussed. The values of these characteristic data for YBa2Cu3O7 (123-O7), YBa2Cu3O6 (123-O...
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Samuel L. Zelinka,Samuel Glass, Eleanor Q. D. Lazarcik
The purpose of this paper is to examine whether isothermal microcalorimetry can be used to determine the corrosion rates of metals embedded in wood. Metal fasteners were driven into dowels of wood treated with alkaline copper quaternary, a common wood preservative that increases ...
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The possibility of using phosphogypsum for the production of cements based on calcium sulphoaluminate (3CaO·3Al2O3·CaSO4), which is of interest in the fields of rapid-hardening, expansive and energy-saving hydraulic binders, has been examined.
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The phenomenological, kinetic and mechanistic aspects of thermal decomposition of perchlorate, nitrate, chloride, bromide and iodide complexes of cobalt(II) with the Schiff base 1,2-bis(imino-4'-antipyrinyl)ethane (GA) have been studied by TG and DTG analyses. The kinetic paramet...
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The miscibility of poly(vinyl chloride)/terpoly(α-methylstyrene-acrylonitrile-methyl methacrylate) (PVC/MS-AN-MMA) blend was investigated by differential scanning calorimetry. The parameters of thermal transitions and phase behaviour of the blend were determined. Using the criter...
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The kinetics of thermo-oxidative decomposition of peanut oil have been investigated using a Du Pont differential scanning calorimeter. The measurements were carried out under dynamic conditions in an atmosphere of oxygen. The activation energy of oxidation of the oil is calculate...
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