Results 221 to 230 of about 341,295 (268)
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Thermal behavior of polyethyloxazoline
Journal of Applied Polymer Science, 1986AbstractPolyethyloxazoline (PEOx) is a new water‐soluble, thermoplastic polymer. It has a glass temperature of 56°C which increases to about 72°C on storage at room temperature. This increase is a manifestation of physical aging, and it occurs relatively fast with PEOx in comparison to other polymers.
H. Keskkula, D. R. Paul
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Thermal behavior of polymethacrylonitrile
Journal of Applied Polymer Science, 1972The intramolecular cyclization by heating and the thermal degradation of polymethacrylonitrile samples prepared with various initiators, AIBN (A), BPO (B), BuLi (C), Et2Mg (D), and methacrylonitrile–methacrylic acid copolymer (E), were investigated by DTA, TGA, and infrared spectroscopy.
Shigeo Nakamura +2 more
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Thermal behavior of furosemide
Journal of Thermal Analysis and Calorimetry, 2011Data from theoretical, thermal, and spectroscopic methods were compared in order to map a possible mechanism for the thermal decomposition of furosemide, a diuretic compound, in solid state. TG/DTG curves suggested a two-stage decomposition process. The first product of decomposition is water (m/z = 18), released due to a dimerization resulting in the ...
Rita de Cássia da Silva +3 more
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The thermal behavior of cycloalkanes
Die Makromolekulare Chemie, 1977AbstractThe thermal behavior of cycloalkanes (CH2)n with 12 ≤ n ≤ 84 prepared by metathesis reaction of cyclododecene, GPC separation of the oligomers, and hydrogenation has been investigated. The molar enthalpies of fusion being lower by a certain amount than those of the corresponding n‐alkanes are a linear function of the chain length n. The entropy
Hartwig Höcker, Klaus Riebel
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Thermal behavior of Bi5Pb3O10.5
Solid State Ionics, 2000Abstract In Bi 5 Pb 3 O 10.5 there exist three polymorphs: the low-temperature stable β L , the high-temperature stable β which shows a high oxide-ion conduction, and the metastable β 2 phases. This paper describes the phase transformations between these polymorphs using TG–DTA and dc conductivity measurements.
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Thermal behavior of a bentonite
Journal of Thermal Analysis and Calorimetry, 2007Abstract The mineralogical composition of the Kutahya calcium bentonite (CaB) from Turkey was obtained as mass% of 60% calcium rich smectite (CaS), 30% opal-CT (OCT), trace amount illite (I), and some non-clay impurities by using chemical analysis (CA), X-ray diffraction (XRD), and thermal analysis (TG-DTA) data.
M. Önal, Y. Sarıkaya
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Thermal behavior of carbohydrates
Journal of Polymer Science Part C: Polymer Symposia, 1971AbstractThermal analysis of a hardwood reflected the pyrolysis of its main components including xylan and cellulose. Thermal properties of these components were investigated with model compounds consisting of α‐D‐xylose, substituted phenyl β‐D‐xylopyranosides, β‐Dglucopyranosides and α‐D‐arabino‐hexopyranosides and 1,6‐anhydro‐β‐D‐glucopyranose.At the ...
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Microstructure and Thermal Behavior of Thermal Barrier Coatings
Journal of Thermal Spray Technology, 2008Yttria stabilized zirconia thick coatings were thermally sprayed from two different feedstock powders. Coating characteristics such as density, crystalline phase composition, and microstructure were evaluated. The thermal expansion coefficient and thermal diffusivity were measured as a function of temperature up to 800 °C and analyzed in terms of the ...
E. Garcia +3 more
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2017
The developed models is utilized in this chapter for investigating thermal characteristics of DC–AC inverters. The physical properties and performance of a commercially adopted inverter chip was studied and realistic model was derived to understand its behavior. Subsequently, model’s outcomes and performance was experimentally evaluated using purposely
Alhussein Albarbar, Canras Batunlu
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The developed models is utilized in this chapter for investigating thermal characteristics of DC–AC inverters. The physical properties and performance of a commercially adopted inverter chip was studied and realistic model was derived to understand its behavior. Subsequently, model’s outcomes and performance was experimentally evaluated using purposely
Alhussein Albarbar, Canras Batunlu
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The thermal behavior of lovastatin
Thermochimica Acta, 1988Abstract The thermal properties of lovastatin were investigated by DSC aad TG. Melting point and heat of fusion were determined and the thermo-oxidative stability vas studied.
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