Materials Literature
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Abstract Influence of polyurethane (PU) structure on the nature of PU/clay nanocomposite was studied using varying amounts of trimethylol propane (TMP) as branching agent. The effect of hydroxyl groups in the modifier of organoclays on the structure of PU/clay nanocomposites was studied. Nanocomposites were characteri…
A conjugated aromatic polyazomethine (PAZ) with triphenylamine (TPA) unit in the main chain was obtained by high temperature solution polycondensation of diformyltriphenylamine with o-dianisidine (Fast blue B). A major feature of the PAZ containing TPA unit in the main chain is their complete solubility in comparison…
Abstract Hybrid titanium catalysts supported on silica/poly(styrene‐ co ‐acrylic acid) (SiO 2 /PSA) core‐shell carrier were prepared and studied. The resulting catalysts were characterized by Fourier transform infrared (FTIR) spectroscopy, laser scattering particle analyzer and scanning electronic microscope (SEM). Th…
BiScO 3 –PbTiO 3 (BSPT) thin films with the thickness from 80 to 800 nm were fabricated via a sol–gel method on Pt(111)/Ti/SiO 2 /Si(001) substrates, and the effects of thickness on the structure and properties of the sol–gel‐derived BSPT thin films were investigated. All the films with different thickness showed simi…
In this paper, we report the synthesis of iron‐containing SiC(O) magnetoceramics using a reverse microemulsion technique. First, an aqueous iron nitrate solution as the internal phase and a polycarbosilane (PCS)–heptane solution as the continuous phase were emulsified in the presence of a surfactant to synthesize iron…
Abstract In this study, the effect of triphenyl phosphate (TPP), commonly used as flame retardant, also montmorillonite nanoclay and hybrid of them, on the morphology and rheological characteristic of PC/ABS (Polycarbonate/Acrylonitrile–butadiene–Styrene) blends are investigated. The blends were prepared via a direct…
The influence of alkali metal (Li or Cs) adsorption on the work functions of capped (5, 5) and (9, 0) single-walled carbon nanotubes (CNTs) was investigated using first-principles calculations. After Cs adsorption, the decrease in the work functions of (5, 5) and (9, 0) CNTs was more pronounced than that of Li-adsorbe…
Eleven new complexes of norfloxacin (HL) with the formulas [Ti(HL)(Cl) 4 ], [Cr 2 (L) 2 (CO 3 ) 2 (H 2 O) 4 ], [Cr(HL) 2 (Cl) 2 ]Cl·3H 2 O, [Cr(HL) 2 (AcO) 2 ]AcO·2H 2 O, [Cr 2 (HL) 2 (SO 4 ) 2 (H 2 O) 4 ]SO 4, [Mn(L) 2 (H 2 O) 2 ], [Mn(HL) 2 (Cl) 2 ], [Mn(HL) 2 (AcO) 2 ], [Ni(HL) 2 (Cl) 2 ], [Ni(HL) 2 (SO 4 )], and […
Using a laser monitoring observation technique, the solubility values of cefepime hydrochloride in water + (ethanol, 1-propanol, or 2-propanol) from (278.15 to 308.15) K at atmospheric pressure were measured. The experimental data were correlated with a simplified molecular thermodynamic model.
We report results of crystal structure analyses of calcium‐doped lanthanum manganites, La 1− x Ca x MnO 3 , obtained by mechanosynthesis. The calcium to lanthanum ratio x was varied from 0 to 1 at increments of 0.1, allowing us to study changes in crystal structure with different degrees of calcium substitution, from…
Pure and Sm 3+ (0.33, 0.46, 1.48, and 2.19 at.%)‐doped ZrO 2 thin films have been prepared using radio‐frequency (RF) sputtering technique. The phase composition and photoluminescence (PL) properties have been studied on these pure and doped thin films as a function of annealing temperature and doping concentration. P…
The optical properties of chemical-solution-deposited thin films of lead sulfide (PbS) were investigated using infrared transmission and photoluminescence spectroscopies. The synthesized films are characterized by a wide range of microstructures, from 15 nm nanocrystals up to monocrystals. Energy bandgap values for bu…
Oblique boundary conditions are introduced in the Fourier modal method at each slice of the staircase decomposition of an arbitrary profile of a dielectric corrugation grating. The precision and convergence improvement are demonstrated by comparison with reference methods.
The usage of ultra-high-strength boron steel (UHSS) in automotive industry has increased rapidly in the recent past. Forming of UHSS components is performed at elevated temperatures, which also offers the possibility of hardening through quenching directly after forming. However, the influence of hardening on friction…
Abstract The aim of research is to develop potential tumor‐targeted circulation‐prolonged macromolecular magnetic resonance imaging (MRI) contrast agents without the use of low molecular gadolinium (Gd) ligands. The contrast agents were based on polymer–metal complex nanoparticles with controllable particle size to ac…
Quasiclassical interference between bulk and boundary scattering channels in thin metal films with rough surfaces is discussed. The effective transport time, which is calculated beyond Mathiessen's approximation, exhibits a nonanalytical dependence on the bulk relaxation time. Interference effects strongly affect the…
Abstract A series of epoxy nanostructured coatings based on diglycidyl ether of bisphenol A (DGEBA) and an isophorone diamine crosslinker was prepared. Top‐down nanocomposites (3% nanofiller) were obtained by the mechanical dispersion of nanoalumina, silanized nanoalumina, and organomodified clays. Bottom‐up hybrids w…
Phase field model is developed to calculate heterogeneous distributions of polarization, charge, local field, and effective susceptibility of dielectric and magnetic composites with arbitrary multicomponent microstructures. It solves electrostatic and magnetostatic equations in terms of polarization vector field in re…
A novel system for fractionating single wall carbon nanotubes (SWCNTs) by length via a three-step cross-flow filtration has been developed in which three membrane filters of different pore sizes, 1.0, 0.45, and 0.2 microm, were used. SWCNTs dispersed in water with the help of sodium carboxymethylcellulose (CMC) deterg…
Abstract The effects of POE‐ g ‐MAH, prepared through different methods, on morphology and properties of PA6/POE/POE‐ g ‐MAH blends are summarized in this article. The grafting degree of POE‐ g ‐MAH can be increased through the ultrasound‐assisted extrusion. Experimental results showed that the addition of POE‐ g ‐MAH…