Journal of Thermal Analysis and Calorimetry

http://link.springer.com/journal/10973

List of Papers (Total 566)

Cold-induced changes in cell wall stability determine the resistance of winter triticale to fungal pathogen Microdochium nivale

The exposure of winter triticale to cold promotes genotype-dependent resistance to fungal pathogen. We present the evidence that structural and chemical modifications of the cell wall components induced by cold can be correlated with the resistance against fungal infection. Our results showed that cellulose of hardened triticale cv. Hewo (able to develop resistance after cold ...

Thermal and photoluminescence analysis of a methacrylic diester derivative of naphthalene-2,7-diol

The synthesis and thermal and optical properties of a new type of photoluminescent monomer of 2,7-bis[2-(2-hydroxy-3-methacryloyloxypropoxy)propoxy]naphthalene (2,7-NAF.PMEM) are presented. The chemical structure of 2,7-NAF.PMEM was confirmed by 1H and 13C NMR analysis and ATR-FTIR spectroscopy. Next, bulk copolymers were synthesized using two comonomers, methyl methacrylate and ...

Reinvestigation of the DyCl3–LiCl binary system phase diagram

The phase equilibria in the DyCl3–LiCl binary system were established on the basis of differential scanning calorimetry (DSC) measurements. One compound, namely Li3DyCl6, is formed in this system. It melts congruently at 768 K with enthalpy of 51.6 kJ mol−1. DSC curves for eutectic composition and for compositions close to eutectic (on the left and right side of eutectic) are ...

Selected quality properties of lipid fraction and oxidative stability of dry dog foods under typical storage conditions

Selected quality and oxidative stability parameters of the lipid fraction were analyzed in four complete dry dog foods with different main animal-derived ingredients. The measurements were taken at the time of bag opening and repeated after 7 months of continuous storage in normal room conditions. Fatty acid (FA) content and acid value (AV) were determined, followed by subsequent ...

Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

The metal–organic frameworks of the formula Ln(bta)·nH2O where n = 3, 4, 5 or 6; bta = benzene-1,3,5-triacetate ion: [C9H9(COO)3]3−; Ln = La(III), Nd(III), Eu(III), Tb(III), Ho(III), Tm(III), Lu(III) were synthesized by the reaction of LnCl3·xH2O with ammonium salt of H3bta acid in water solution. Insoluble water compounds crystallize in the monoclinic or triclinic crystal system, ...

Synthesis, structure, and thermal stability of new scheelite-type Pb1−3x□xPr2x(MoO4)1−3x(WO4)3x ceramic materials

Monophasic polycrystalline samples of Pb1−3x□xPr2x(MoO4)1−3x(WO4)3x solid solution with limited homogeneity (0 < x ≤ 0.2222) and cationic vacancies (□) have been prepared by high-temperature annealing of PbMoO4/Pr2(WO4)3 mixtures composed of 40.00 mol% and less of praseodymium tungstate. Initial reactants and obtained ceramic materials were characterized by XRD, simultaneous ...

Effect of alkali and alkaline earth metals addition on Ni/ZrO2 catalyst activity in cellulose conversion

This work is devoted to the investigation of the effect of alkali and alkaline earth metals addition on Ni/ZrO2 catalyst activity in high-temperature cellulose conversion. The catalysts containing 20 % of Ni and 1 % of Ca, Mg, Na and K (calculated per amount of oxide) introduced on ZrO2 surface by impregnation method were prepared. The surface properties of the investigated samples ...

Thermal analysis in foundry technology

TG–DSC thermal analysis involved two new BioCo foundry binders in the form of a composition with poly(acrylic acid) and modified polysaccharides (dextrin, sodium salt of carboxymethyl starch). Thermal analysis was conducted to determine the effect of the thermal decomposition conditions and polymer structure on the progress of degradation in terms of processes occurring in the ...

Nucleation ability of advanced functional silica/lignin hybrid fillers in polypropylene composites

Novel advanced functional silica/lignin hybrid fillers were synthesized for the purpose of their application in composites with polypropylene. The use of lignin for the production of hybrid fillers is justified due to the advantages such as reduction in cost of products, improvement in biodegradability as well as antioxidant and antimicrobial properties. The study encompasses an ...

Spectroscopic, thermogravimetric and biological studies of Na(I), Ni(II) and Zn(II) complexes of quercetin

The Na(I), Zn(II) and Ni(II) complexes with quercetin have been synthesized. The composition of these compounds was established by means of elemental and thermogravimetric analyses. To study the molecular structure of synthesized compounds, many miscellaneous analytical methods, which complement one another, were used: infrared (FT-IR), Raman (FT-Raman) and electronic absorption ...

DSC coupled with PCA as a tool for butter authenticity assessment

The authenticity assessment of butter is still a big challenge for analytics. Due to its low cost, palm oil (PO) is the edible fat most frequently used as an adulterant in the production of butter. The aim of this study was to test the feasibility of the DSC technique coupled with principal component analysis (PCA) for the distinction of pure butterfat from adulterated. A ...

Buffer contribution to formation enthalpy of copper(II)–bicine complex determined by isothermal titration calorimetry method

The isothermal titration calorimetry (ITC) technique supported by potentiometric titration data was used to study a buffer contribution to the formation enthalpy of copper(II)–bicine complex obtained directly from the ITC experiments. The calorimetric measurements were carried out at 298.15 K in 100 mM buffer solutions with a pH of 6. In experiments two biologically relevant pH ...

Effect of cenospheric fillers on the flammability and fire hazard of silicone rubber composites

This paper presents the results of testing the flammability of silicone rubber composites containing fillers, such as cenospheres, cenospheres covered with iron, attapulgite, wollastonite, aluminum hydroxide and silica. In order to increase the insulating character of boundary layer, boron trioxide was incorporated into the composites of silicone rubber as a ceramization additive. ...

The effect of modified keratin on the thermal properties of a cellulosic–elastomeric material

The need for new composite materials that would exhibit good parameters such as mechanical or thermal properties, while being easily processable and able to undergo biodecomposition after its period of use, has been a great source of inspiration for modern material science. A lot of work has been done in the field of biodegradable polymeric materials throughout almost every aspects ...

Microstructure and thermal characteristics of SiC–Al2O3–Ni composite for high-temperature application

The development of the aviation industry is related to the production of new materials that can operate at high temperatures and corrosive atmospheres. The paper presents new material for application in high temperature obtained by pressing and sintering a composite made from SiC–Al2O3–Ni. Analysis of the microstructure showed high porosity, which is caused by used manufacturing ...

Synthesis of Fe8V10W16O85 by a solution method

Phase of block-type structure and formula Fe8V10W16O85 has been synthesized by a solution method using Fe(NO3)3·9H2O, NH4VO3 and (NH4)6W12O39·xH2O as a metal precursors. Brown solid obtained after evaporation of water at 60 °C has been heated in air at temperatures selected based on results of measurements with the aid of differential thermal analysis and thermogravimetric analysis ...

Investigation of key parameters influence on properties of the green pellets and lightweight ceramic proppants obtained by mechanical granulation method

Ceramic proppants are determined as material designed for hydraulic fracturing in the shale gas industry. Shale formation is fractured due to pumping the fracturing fluid including proppants into the unconventional well. Ceramic granulates set in the newly created fissures act as a prop and permit the shale gas of flowing up the well. The aim of this research was to study and ...

Selected thermal properties of polyethylene waxes

Selected thermal properties of different types of polyethylene waxes, i.e. by-products formed in ethylene low-pressure polymerization process, physically and chemically modified waxes are presented in the study. Temperatures of phase transitions and relevant thermal effects were defined using DSC method. Additionally, drop point and penetration of waxes were determined. It was ...

Physico-mechanical and thermal properties of epoxidized natural rubber/polylactide (ENR/PLA) composites reinforced with lignocellulose

The aim of the study was to prepare elastic composites of epoxidized natural rubber with polylactide that was reinforced with lignocellulose. To improve the functional properties of an ENR/PLA blend, we used lignocellulose modified with silanes and silica. The addition of silanes, particularly U511-tetraethoxysilane, improved the strength characteristics of ENR/PLA composites, ...

The influence of heat treatment on the structure and thermal properties of metallic glasses

This paper presents the structure and chosen properties of Fe-based ribbons with specified composition, after casting and heat treating. The aim of this work was to produce amorphous ribbons and study the influence of heat treatment on the structure and thermal properties before and after annealing. The base alloy ingot was prepared by induction melting of pure Fe, Co, B, Si and Nb ...

Temperature-modulated thermomechanical analysis as a potential technique for irreversible stress relaxation measurement in various cables

Temperature-modulated thermomechanical analysis (TMA) is a technique which allows for separation of the temperature-dependent thermal expansion from the time and temperature-dependent creep or stress relaxation behavior. Extrusion during the cable production process may orient and stretch polymer chains which are rapidly cooled in water. Such frozen-in stresses might relax over a ...

Furniture wood waste as a potential renewable energy source

In this study, the combustion behavior of raw waste wood from furniture and samples torrefied at temperatures of 473, 513, 553 and 593 K was investigated. TG-DTG analysis showed that the mass loss in the first stage of the process decreased with the temperature of torrefaction, whereas the temperature in the second stage increased. The influence of torrefaction and combustion ...

Dilatometric study of low-alloy steels with silicon carbide addition

Low-alloy steels produced via the traditional powder metallurgy process, using a die compaction, are currently widely used. Therefore, improving their properties is an issue that attracts much attention. The most common method of enhancing the properties of a given material is introducing additives, e.g., silicon to prealloyed low-alloy steels. It may be added through the ...

Chromium-modified zinc oxides

Zinc oxides modified with chromium were prepared by the co-precipitation method. Samples were calcined at 400 °C. Structural and surface properties of materials were studied by means of transmission electron microscopy, X-ray diffraction and low-temperature nitrogen adsorption methods. Temperature-programmed reduction methods were used for investigation of the influence of chromium ...