Materials Literature
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The parallel and perpendicular orientation of lamellae in free-surface thin films of symmetric diblock copolymers is studied in the strong segregation approximation. In contrast to films, which are confined between two hard walls, the period of the parallel lamellar structure in the free-surface films is determined fr…
Abstract Experiments were conducted to determine the effect of an incremental change in the solution pH, from 4 to 6.6, on CO2 corrosion rates of AISI 1018 steel in the presence of H2S in both single phase flow (Vsl = 1 m/s) and multiphase flow (Vsg=3 m/s, Vsl= 1 m/s) in a large scale multiphase flow loop. Linear pola…
Abstract This paper deals with the phenomena of corrosion by acetic acid and carbon dioxide at the top of a horizontal pipeline under dewing conditions. The effect of different parameters known to influence the Top of the Line Corrosion (TLC), such as the condensation rate and the bulk temperature is studied. The free…
Novel dipyridyl compounds containing a mono- and bisbenzothiadiazole unit were synthesized using the Stille coupling reaction. Their pyridinium salts, viologen analogues, were also prepared by the N-alkylation. The X-ray crystallographic analysis of the compounds containing a benzothiadiazole ring revealed nonplanar m…
A novel diisocyanate, 1,2-bis(isocyanate)ethoxyethane (TEGDI), whose backbone is ether bonds was used for the preparation of polyurethane elastomers (PUEs). 1,6-Hexamethylene diisocyanate (HDI) was also used as a control. The PUEs were prepared with either TEGDI or HDI, poly(oxytetramethylene) glycol (PTMG), and curin…
Novel adsorbents that have an excellent adsorption capacity for Au(III) were prepared by immobilization of bayberry tannins and larch tannins onto collagen fiber matrixes. When the initial concentration of Au(III) was 478 mg/L and the amount of adsorbent was 20.0 mg, the adsorption capacities at equilibrium of immobil…
The electrochemical properties of two commercial (Condias, Sumitomo) boron-doped diamond thin-film electrodes were compared with those of two types of boron-doped diamond thin film deposited in our laboratory (microcrystalline, nanocrystalline). Scanning electron microscopy and Raman spectroscopy were used to characte…
We explored the magnetic behavior of a common two-phase nanomagnetic system by Monte Carlo computer simulation of a modified Heisenberg model on a 3D complex lattice with single- and cluster-spins. The effect of exchange coupling between two component magnetic phases was studied on the enhancement in Curie temperature…
The spectrum of acoustic vibrational modes of an inhomogeneous elastic continuum are analyzed with application to a spherical nanoparticle embedded in an infinite glass block. The relationship of these modes to the discrete vibrational spectrum of a free sphere is studied. The vibrational modes of a sphere with a fixe…
Amorphous and crystalline Bi3.25La0.75Ti3O12 thin films deposited on SiO2/Si(100) substrates have been prepared by a chemical solution deposition (CSD) process. X-ray diffraction shows that the crystal structure is a bismuth-layered perovskite structure with some preferred (117) orientation. The refractive indices and…
The hydrothermal–electrochemical growth of ATiO 3 (A = Ba, Sr) dielectric thin films on Ti substrates in A(OH) 2 solutions is reviewed. The film thickness increased monotonically with increase in the quantity of electricity passed through the Ti substrate, and could be controlled coulometrically by this factor. The cu…
Considering the preference of platinum for S-donor ligands, it is not surprising that sulfur-containing compounds make up the majority of potential cytoprotective agents for platinum-based therapy explored for their applicability thus far. With respect to platinum-based anticancer chemotherapy, glutathione is known to…
The object of the work were spinel ferroxide nanoparticles of Fe3O4 and CuFe2O4 with Jahn-Teller octahedral distortion. The particles were obtained via a soft chemical process, with the particle size being up to 12 ± 5 nm for Fe3O4 and 6.5 ± 3.5 nm for CuFe2O4. The particles shape was spherical. The crystalline struct…
Abstract Gas composition analysis measurements have been performed in the outlet gas stream of a laboratory metal dusting test furnace in order to study the influence of metal dusting on gas reactions. This analysis has shown that carbon deposition is associated with metal dusting, i.e. the material most severely atta…
Abstract Poly( L ‐lactide) (PLLA) and poly(3‐hydrobutyrate‐ co ‐3‐hydroxyvalerate) (PHBV) were blended with poly(butadiene‐ co ‐acrylonitrile) (NBR). Both PLLA/NBR and PHBV/NBR blends exhibited higher tensile properties as the content of acrylonitrile unit (AN) of NBR increased from 22 to 50 wt %. However, two separat…
Well-shaped single crystals of NdNiO 3 perovskite have been grown for the first time under high oxygen pressure conditions, in a belt-type press at 4 GPa. The reaction took place in sealed platinum capsules, in the presence of KClO 3 as the oxidizing agent. It seems that the choice of hydroxides of the cations involve…
The influence of electron-donating ability of tertiary amines on the bleaching process of methylene blue and the coloration time dependence on different ITO roughness on glass substrates have been investigated to improve the electrooptical properties of a new photoelectrochromic organic film.
At ambient pressure the solubility of magnesium in iron is very limited (of the order of 0.025 at.% in the liquid state), and vice versa. In a series of experiments using the piston–cylinder and multi-anvil apparatus at pressures up to 20 GPa and temperatures up to 2000 °C, we found an increase in the solid solubility…
We have investigated the potential dependent surface phase behaviour of a Cu(111) electrode in a neutral sulfate containing electrolyte by cyclic voltammetry (CV) and electrochemical in situ scanning tunneling microscopy (ECSTM). The cyclic voltammograms show characteristic peaks for the formation/reduction of an oxid…
Abstract We investigated a system formed of isotactic polypropylene (iPP) and hydrogenated hydrocarbon resin MBG273 (up to 30 wt % resin) to study the influence of the composition on the morphology, structure, and properties of its blends and derived films. All the blends, after the mixing of the components in the mel…