Showing papers in "Thermochimica Acta in 2011"

TL;DR: In this article, the authors have developed recommendations for reliable evaluation of kinetic parameters (the activation energy, the preexponential factor, and the reaction model) from the data obtained by means of thermal analysis methods such as TGA, differential scanning calorimetry (DSC), and differential thermal analysis (DTA).

TL;DR: In this paper, the effect of different nanoparticles, their dispersion and the used modifiers, on polymer thermal stability was highlighted, highlighting the effect that hydrogen or covalent bonds can increase the adhesion of nanoparticles with the polymer matrix, resulting in higher dispersion degrees.

TL;DR: The performance of the Flash DSC 1, a recently introduced chip fast scanning calorimeter (FSC) based on MEMS sensor technology, was studied in this paper, where the authors measured self nucleation, annealing and thermal fractionation, amorphization, and cross-over of crystallization behavior with scan rate variation for two polymers.

TL;DR: In this article, the density of deep eutectic solvents based on three different salts was estimated using empirical method, and the values of measured and predicted densities were compared and the average of absolute relative error percentage (ARPE) for all DESs was found to be 1.9%.

TL;DR: In this paper, the authors present a new twin-membrane calorimeter chip for fast differential scanning calorimetry (DSC) with the Flash DSC 1 of Mettler-Toledo.

TL;DR: In this article, the hydration of low-water and low porosity SF-modified cement-based materials was investigated using X-ray diffraction (XRD), differential thermal analysis (DTA) and also by means of the TGA/DTA technique.

TL;DR: In this article, a non-isothermal thermogravimetric analysis in the heating rate range of 10−50°Cmin −1 was performed on corn cobs and sugar cane bagasse.

TL;DR: In this paper, the combustion characteristics of various biomass fuels from the Mediterranean region (olive prunnings, cotton residue, olive and peach kernels, pine needles, cardoon, and sewage sludge) were investigated and the compatibility of each component in the blend was studied.

TL;DR: In this article, poly(methyl methacrylate)/n-hexadecane microcapsules were prepared using emulsion polymerization, and their applicability to textiles was studied.

TL;DR: In this article, a novel flame-retardant for woven cotton fabric using sodium hypophosphite (SHP), maleic acid (MA), triethanol amine (TEA), and nano TiO2 through conventional pad-dry-cure method was employed to investigate the thermal decomposition behavior of the treated samples.

TL;DR: A thermally conductive linear low-density polyethylene (LLDPE) composite with aluminum nitride (AlN) as filler was prepared in a heat press molding as discussed by the authors.

TL;DR: In this article, the decomposition of five different biomass samples was studied in a thermobalance, including esparto grass, straw, Posidonea Oceanic seaweed, waste from urban and agricultural pruning and waste of forest pruning.

TL;DR: In this article, the effects of alkali lignin incorporation and in situ reactive compatibilization on the thermal stability and flame retardancy of ABS were investigated, and it was shown that the formation of a protective char layer is primarily responsible for the enhanced flame retardance.

TL;DR: In this article, the authors investigated the crystallization behavior of biodegradable poly( l -lactic acid) (PLLA)/graphene oxide (GO) nanocomposites at different GO loadings from the amorphous state.

TL;DR: In this paper, the influence of crystal polymorphism on the thermal properties of poly( l -lactic acid) (PLLA) is discussed, and a three-phase structure of PLLA composed of a crystal phase and two amorphous fractions with different mobility is analyzed.

TL;DR: In this paper, a PLLA/orotic acid (OA) composite was prepared via a simple melt compounding method, and it was found that both the nonisothermal melt crystallization and overall isothermal melts crystallization kinetics of the composite were enhanced significantly in the composite, even at very low OA content, relative to that of neat PLLa.

TL;DR: In this article, a commercial grade PLA was characterized using differential scanning calorimetry under both isothermal and non-isothermal conditions, and the experimental data were analyzed evaluating the crystallization kinetics constants for melt and cold isothermal crystallization at some temperatures.

TL;DR: In this article, a detailed analysis of the three-phase structure of poly(L-lactic acid) was performed by temperature-modulated differential scanning calorimetry upon quasi-isothermal and nonisothermal crystallizations.

TL;DR: In this article, the thermal behavior of eleven potential storage materials was studied by means of thermogravimetry (TG) and differential scanning calorimetry analysis (DSC), coupled with a quadrupole mass spectrometer (QMS).

TL;DR: In this paper, the authors compared with another fuel from thermodynamic aspect, namely, biomass gasification with air in autothermal gasifiers, and showed that higher carbon and hydrogen content in the ultimate analysis generates higher gaseous energy and exergy values.

TL;DR: In this article, the internal design XI-400 of the Mettler-Toledo differential scanning calorimeter (DSC) was used for temperature calibration and electrical characterization.

TL;DR: Differential scanning calorimetry (DSC) measurements were used to study crystallization in the Se 70 Te 30 glass under non-isothermal conditions as mentioned in this paper, and the crystallization kinetics were described in terms of the nucleation-growth Johnson-Mehl-Avrami and autocatalytic Sestak-Berggren models.

TL;DR: Within the framework of single-step approximation, the Sestak–Berggren equation enables to describe the kinetics of complex condensed-state processes without a deeper insight into their mechanism.

TL;DR: In this article, the flame retardant coatings were successfully applied on the surface of cotton fabrics using UV-curable technique using tri(acryloyloxyethyl) phosphate (TAEP) and triglycidyl isocyanurate acrylate (TGICA).

TL;DR: In this paper, the dynamic mechanical behavior and thermal properties of nylon 6 composites containing from 2.5 to 30% MCC were investigated using differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), and thermogravimetric analysis (TGA).

TL;DR: In this article, a new type of form-stable phase change material (PCM) was employed in thermal management, and the prepared composite PCMs remained solid without leakage above the melting point of the PEG.

TL;DR: In this article, an interpretation of the experimental data based on theory of subcooling and nucleation in emulsions is presented and discussed, and it is shown clearly that the surfactant used to stabilize the emulsion has a strong impact on the nucleation of the sample, too.

TL;DR: In this article, a new type of organoclay composite (PMMT) with good heat storage and release capacity was produced by intercalating n-hexadecane with Na-montmorillonite (NaMMT) in a surfactant-assisted medium.

TL;DR: In this paper, the thermophysical properties of hollow silica spheres were studied by the experimental test 3 omega method, theoretical calculation and finite element simulation, and the experimental values of the thermal conductivity, less than 0.02 Wm(-1) K-1, indicated that powder silica hollow spheres are indeed the high efficient heat insulating materials.