Materials Literature
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The temperature versus magnetic field phase diagram of the 2D triangular lattice and multiferroic compound RbFe(MoO(4))(2) is analysed from the point of view of symmetry. The paramagnetic space group and its irreducible representations are used in order to obtain the magnetic symmetry of the possible modulated phases…
Single crystalline tri-wing tellurium nanoribbons with well-defined outer surfaces and geometrical shapes are synthesized by a facile hydrothermal method in the presence of poly(vinyl alcohol) as the surfactant. The tri-wing Te nanoribbons with a length of tens of micrometres have a very thin wing structure with an av…
BACKGROUND: Nanoparticles (NPs) produced by nanotechnology processes have taken the field of medicine by storm. Concerns about safety of these NPs in humans, however, have recently been raised. Although studies of NP toxicity have focused on lung disease the mechanistic link between NP exposure and lung injury remaine…
Surface-enhanced Raman spectroscopy (SERS) can be used to study chemical reactions on metal surfaces. Its detection limit makes it possible to observe long-lived intermediates and conformational changes to reactants and products. However, the interaction between the surface and the adsorbate makes interpretation of SE…
We report a Raman study of single crystal pyrochlore Er(2)Ti(2)O(7) as a function of temperature from 12 to 300 K. In addition to the phonons, various photoluminescence (PL) lines of Er(3+) in the visible range are also observed. Our Raman data show an anomalous red-shift of two phonons (one at ~200 cm(-1) and another…
Abstract A novel intumescent flame retardant (IFR), containing ammonium polyphosphate (APP) and poly(tetramethylene terephthalamide) (PA4T), was prepared to flame‐retard acrylonitrile‐butadiene‐styrene (ABS). The flame retardation of the IFR/ABS composite was characterized by limiting oxygen index (LOI) and UL‐94 test…
A characterization method for surface charging analysis on insulators submitted to electron irradiation has been developed. This method, based on the use of two Kelvin probes (KPs), provides details on the transit time motion for injection of both holes and electrons. It can also be used to assess the isotropy of late…
The stress-strain behaviors of natural rubber (NR)-zinc methacrylate (ZDMA) composite have been studied by uniaxial tension. The results indicated that there was a large reinforcement by ZDMA and the NR/ZDMA composites exhibited a high stress-softening effect. Meanwhile, the recovery stretch curve was close to the sec…
Upon exposure, TiO(2) nanoparticles (NPs) have been recovered in internal organs such as the liver, and are proposed to cause cellular/organ dysfunction, particularly in the liver and lungs. We hypothesized that despite being considered "inert" as bulk material, TiO(2) NPs may impair insulin responses in liver-derived…
Abstract Two hyperbranched polyesteramides (HYP 1 and HYP 2 ) were prepared by reacting succinic anhydride (ScAn) with both of diisopropanolamine (DiPA) and diethanolamine, respectively, via one‐pot polycondensation reaction. The prepared polymers were analyzed using gel permeation chromatography, infrared spectra, an…
Abstract In this article, dynamic packing injection molding (DPIM) technology was used to prepare injection samples of Polypropylene‐Calcium Carbonate (PP/CaCO 3 ) nanocomposites. Through DPIM, the mechanical properties of PP/nano‐CaCO 3 samples were improved significantly. Compared with conventional injection molding…
Abstract Two rubber compounds with different amounts of chemical curatives were prepared by mixing natural rubber with a high loading of a sulfur‐bearing silanized precipitated amorphous white silica nanofiller. The chemical bonding between the filler and rubber was optimized via the tetrasulfane groups of the silane…
Inter-Landau-level transitions in the bilayer graphene in high perpendicular magnetic field at the filling factor $\ensuremath{\nu}=0$ have been studied. The next-nearest-neighbor transitions, energy difference between dimer and nondimer sites, and layer asymmetry are included. The influence of Coulomb interaction is…
Abstract In this study, transparent poly(methylmethacrylate) (PMMA)‐silicone hybrid materials, P(MMA‐ co ‐SigUMAx), were prepared with methylmethacrylate (MMA) and multifunctional silicone macromonomer introduced methacryl groups. The transmittance of hybrid materials improved with increase of methacryl groups of sili…
Based on three quantum chemical descriptors (the average polarizability of a molecule (α), the most positive net atomic charge on hydrogen atoms in a molecule (q+ ) and the heat capacity at constant volume (Cv ) derived from the monomers using the density functional theory (DFT), the support vector regression (SVR) ap…
Pulsed neutron diffraction and inelastic neutron scattering were performed on the orthorhombic perovskite PrCoO${}_{3}$ to investigate possible spin-state transitions arising from Co${}^{3+}$ ions. Although the crystal symmetry is orthorhombic, no evidence for a Jahn-Teller distortion is observed in either the average…
The morphological and microstructural changes during ball milling of PE powder mixed with different weight percent (5–15 wt%) of Alumina particles (50–100 nm) were studied. The milling was performed in a planetary ball mill for various times up to 40 h. The results showed that the addition of hard particles accelerate…
Abstract Polystyrene copolymer beads supported dendrimer was synthesized and investigated for its biological applications. Macroporous cross‐linked polystyrene copolymer beads were synthesized using suspension polymerization. Two successive generations of di(chloroethyl) amine‐type end group functionality was formed o…
Abstract A trifunctional organo alkoxysilane (3‐aminopropyl)triethoxysilane (γ‐APS) has been used as reagent for the chemical modification of montmorillonite clay. Silane grafting was taken place in dry and hydrolyzing conditions. Silane grafted and pristine clay took part in interfacial polycondensation process to de…
When increasing the wood fiber (WF) content in extruded wood fiber/plastic composites (WPC) foams, a good balance between reducing the cost and obtaining good cell morphology should be maintained. This study examines the relationship between WF content and the foam morphology in WPC foams. The role of WF as cell nucle…