Materials Literature
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Two cyano-bridged Cu(II)-M(V) [M = Mo (2), W (3)] complexes formed by self-assembly of octacyanometalates [M(CN)8]3- (M = Mo, W) with a new molecular precursor [Cu(L2)]2+ (1) (L2 = a macrocyclic ligand) in a 2:3 ratio have been investigated in terms of structures and magnetic behaviors. The M2Cu3 repeating unit of bot…
Abstract A new phosphorous‐containing fatty acid diepoxide was obtained from 10‐undecenoyl chloride and 10‐(2′,5′‐dihydroxyphenyl)‐9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide and crosslinked with 4,4′‐diaminodiphenylmethane and bis( m ‐aminophenyl)methylphosphine oxide. The properties of the thermosetting mater…
Abstract The polarized infrared (IR) spectroscopy technique was used to evaluate the surface uniaxial molecular orientation of films of poly(ethylene terephthalate) (PET), two thermotropic liquid crystalline polymers (LCPs), Vectra®A950 and Rodrun®LC5000, and their blends obtained by extrusion. The molecular orientati…
Molecular orientation distributions in the crystalline and amorphous regions of a biaxially oriented poly(L-lactic acid) film were analyzed fully by polarized Raman spectroscopy. Raman bands at 926 and 875 cm(-1) were chosen for the determination of the most probable molecular orientation distribution functions for th…
Abstract When the flax fibers (machine tow) were treated with KMnO 4 solution, MnO 2 was deposited over‐all the fiber surface. The amount of MnO 2 deposited relied on the KMnO 4 concentration. Subjecting the flax‐containing MnO 2 to a solution consisting of monomer (acrylic acid, AA) and citric acid, CA (or any acid u…
Abstract Anhydrous europium(III) acetate, Eu(OAc) 3 ( 1 ), its sesquihydrate Eu(OAc) 3 (H 2 O) 1.5 = [Eu 2 (OAc) 6 (H 2 O)](H 2 O) 2 ( 2 ) and the “hydrogendiacetate” [Eu(H(OAc) 2 ) 3 ](H 2 O) = [Eu 2 (OAc) 6 (HOAc) 2 (H 2 O) 2 ](HOAc) 4 ( 3 ) were obtained as colourless single crystals by direct oxidation of europium…
Abstract The melting and crystallization behaviors of isotactic polypropylene (PP)/acrylonitrile–butadiene rubber (NBR) blends were investigated with differential scanning calorimetry. The samples were scanned at a heating rate of 20°C/min in a nitrogen atmosphere. The effects of blend ratio, compatibilizer, and fille…
For the first time, all-dielectric planar chiral metamaterials consisting of arrays of silicon nitride gammadions on fused silica substrates have been fabricated, and shown to be capable of inducing large changes to the polarization states of transmitted light in a manner that is dependent on the two-dimensional chira…
Recessed nanodisk-array electrodes (RNEs) fabricated from track-etched polycarbonate membranes (TEPCMs) having cylindrical nanopores (50 nm in diameter) were characterized using cyclic voltammetry (CV). Such electrodes were prepared by depositing a gold thin film onto a TEPCM via sputtering or thermal evaporation. CV…
A novel two-legged MX-ladder complex {[(dien)PtIVBr2-bpy-PtII(dien)]Br4.2H2O}infinity was synthesized and analyzed by single-crystal X-ray diffraction method and Raman and diffuse reflectance spectra. The electronic structure on two-legged MX-ladder is a pair of out-of-phase charge-density-waves state within each ladd…
Abstract Polypropylene (PP)/nanoclay composite filaments were produced by melt spinning and characterized to study the effect of the compatibilizer and the role of the nanoclay in improving the physical properties. The compatibilizer was maleic anhydride grafted PP. Clay loadings up to 1 wt % with up to 3 wt % compati…
Abstract Natural rubber nanocomposites were produced by melt‐mixing of natural rubber with organically modified silicates. For comparison, a pristine‐layered silicate and a nonlayered version [English Indian clay (EIC)] were also included in the study. The layered silicate used was sodium bentonite (BNT) and organocla…
Abstract Silicon‐containing epoxy resins were prepared from diglycidyloxymethylphenyl silane (DGMPS) and diglycidylether of bisphenol A (DGEBA) by crosslinking with 4,4′‐diaminodiphenylmethane (DDM). Several DGMPS/DGEBA molar ratios were used to obtain materials with different silicon contents. Their thermal, dynamome…
Reactive power compensation is vital for obtaining efficient operation of long transmission power lines or cables. A controllable shunt reactor that controls the transmission of power by continuous reactive power compensation will reduce the transmission losses and increase the transmission capacity of active power. W…
A geometrical-topological description of crystal structure as a three-dimensional graph with coloured nodes, weighted and coloured edges is used to generate a hierarchical sequence of the structure representations. The solid angles of Voronoi-Dirichlet polyhedra of atoms are used as the edge weights and the nodes and…
The information depth of near-edge X-ray absorption fine structure spectroscopy in the total electron yield mode (TEY-NEXAFS) is given by the escape depth of the TEY electrons z(TEY). This is determined by the effective ranges both of the inelastically scattered secondary electrons and of the primary excited electron…
Abstract The adsorption properties of polyacrylonitrile (PAN) carbon nanofibers fabricated by using an electrospinning route were assessed for their applicability as a novel alternative adsorbent. Commercial fiber, A–10, was chosen for comparison. Nitrogen adsorption/desorption isotherms and gravimetric techniques wer…
One-dimensional (1D) hierarchical nanostructures of ultralong layered K(x)MnO(2) (x < 0.3) bundles with diameters 50-100 nm and lengths up to 50-100 microm have been successfully prepared by a PEG-assisted hydrothermal method based on the reaction of KMnO(4) with 2-ethylhexanol. The obtained samples ascribe to the mon…
Abstract Ultrasonic irradiation is employed to assist the chemical oxidative polymerization of aniline in the presence of Fe 3 O 4 nanoparticles in order to prepare a polyaniline (PANI)/Fe 3 O 4 magnetic nanocomposite. In the chemical oxidative polymerization of aniline in the initially neutral medium, the optimum mol…
Abstract Summary: The decomposition of novel phosphorus‐containing poly(oxyphenylene‐sulfonyl‐phenylene‐oxy‐diphenyl phenylene phosphine oxide) (PSU_I), 2,5‐dihydroxy‐1‐biphenylene‐phosphine oxide based polysulfone (PSU_II), poly(sulfonyl‐diphenylphenylene phosphonate) (PSU_P) and bisphenol A‐based polysulfone (PSU) i…