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control and titanium dioxide exposed fish bones, TG and DSC measurements were performed in this study. The aim of this paper is to study the effect of titanium dioxide, both nano and bulk, exposure on the thermal properties of Zebrafish ( Danio rerio

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Crystal structures and thermal properties of some rare earth alkoxides with tertiary alcohols

Possible precursors for atomic layer deposition of rare earth oxides

Journal of Thermal Analysis and Calorimetry
Authors: Timo Hatanpää, Kaupo Kukli, Mikko Ritala, and Markku Leskelä

-butanol (HOCMe 2 i Pr), 2,2-dimethyl-3-ethyl-3-pentanol (HOCEt 2 t Bu), and 3-isopropyl-2,4-dimethyl-pentan-3-ol (HOC i Pr 3 ). The compounds were characterized with NMR and MS. Thermal properties of the compounds were studied with TG/single differential

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the knee, the shoulder, or the ankle. The main purpose of this study is to enhance the mechanical and thermal properties of PLLA ligament by using the particular nanoparticles and for this purpose layered silicate clays (montmorillonite) and fumed

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) Polymers: TS( 8 ) ≈ TS( 9 ) > TS( 10 ) > TS( 7 ) Thermal properties of hydantoins and monomers depend on the type of substituents, the possibility of tautomerization as well as hydrogen bond formation. Introduction of tetralin or

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, electrical and thermal properties. Experimental The polycrystalline ceramic samples of Bi 2 Sn 2−x Ti x O 7 ( x = 0.0, 0.2, 0.4, 0.6 and 0.8) were prepared by high temperature solid-state reaction method under controlled time and

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Abstract  

Samples of poly(l,l-lactide)-block-poly(ethylene glycol)-block-poly(l,l-lactide) (PLLA-PEG-PLLA) were synthesized from l,l-lactide polymerization using stannous 2-ethylhexanoate, Sn(Oct)2 as initiator and di-hydroxy-terminated poly(ethylene glycol) (PEG) (M n = 4000 g mol−1) as co-initiator. The chemical linkage between the PEG segment and the PLA segments was characterized by Fourier transform infrared spectroscopy (FTIR). Thermogravimetry analysis (TG) revealed the copolymers composition and was capable to show the deleterious effect of an excess of Sn(Oct)2 in the polymer thermal stability, while Differential Scanning Calorimetry (DSC) allowed the observation of the miscibility between the PLLA and PEG segments in the different copolymers.

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Abstract  

Thermal decomposition of rhodium(III) chloride under inert, oxidative and reductive gas atmospheres was investigated in order to determine its thermal properties. Stoichiometries of the reactions occurring during heating are described. it is suggested that the chemical formula of soluble rhodium(III) chloride should be presented as RhCl3HCLxH2O. Cold crystallisation of anhydrous rhodium(III) chloride at a temperature of about 500C was established. The procedure for quantitative determination of volatile matter (water and hydrochloric acid) content and rhodium content by thermogravimetry is given and discussed. The repeatability and reproducibility of the method are estimated.

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Abstract  

Equilibrium melting temperatures and crystallization parameters of polyamide 6/polyurethane blends were investigated. Thermal properties of the crystalline phase of blends obtained from polyamide 6 and polyurethane containing 40 wt% of hard segments, are only limited influenced by the overall blend compositon. Because from separate measurements single glass transitions for all samples were estimated, so in the investigated case the blending process may occur mainly between amorphous fraction of polyamide 6 and the polyurethane or, what is more probable, the polyurethane phase is dispersed in the continuous polyamide matrix, although some interactions exist.

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A DTA study of the thermal properties of Tl2V6O16, showed that its structure is not decomposed up to 475 °C. It melts at 505 °C. Tl2V8O21 and Tl3V5O14 crystallize successively from the melt.

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Thermal properties of 4,4′(2,2′-propylidene)-diphenol, referred to as bisphenol A, or BPA, are discussed. Parameters of thermal transitions were measured by DSC. The commercial product crystallizes in α-form crystals which melt at 157°C (onset) and 161°C (peak) with a heat of fusion 134.37 J g−1. Supercooled BPA shows a glass transition at about 40°C. Almost identical results were obtained for samples recovered by different methods: flakes, pastilles and prills. Two new polymorphs, the β and γ-forms were identified. The β-form melts at 131°C with a heat of fusion of 104.9 J g−1. The melting point of the γ-form was measured to be 138°C and its heat of fusion is 118.3 J g−1. Thermal conductivity of crystalline BPA was measured.

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