Materials Literature
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Abstract Maleic anhydride copolymer was modified with another biologically active agent, noradrenaline (NA), using both chemical and enzymatic methods. The modification and synthesized products were named as follows: chemical modification, MASTNAc; enzymatic modification, MASTNAe; enzymatically synthesized MASTNA from…
The ceramic multilayer technique, which is based on tape‐cast green sheets, has the potential to generate advanced composite materials. In this work, high‐purity refractory oxides like α‐alumina, magnesia, and magnesium aluminate spinel were used for tape casting and multilayer processing. Highly porous Al 2 O 3 and M…
Abstract Postconsumer poly(ethylene terephthalate) waste bottles were glycolyzed as precursors of unsaturated polyester resin (UPR) and their montmorillonite (MMT)‐filled nanocomposites. The glycolysis product (hydroxyl‐terminated oligomers) was converted into UPR with various acid contents. These resins were miscible…
Abstract The UV irradiation aging behaviors of PVC composites with several inorganic fillers were studied through Fourier transform spectroscopy (FTIR), ultraviolet spectroscopy (UV‐Vis), differential scanning calorimeter (DSC), scanning electron microscopy (SEM), and mechanical property test. It was found that incorp…
Using the transfer-matrix method, we study the conductance of chiral particles through a monolayer graphene superlattice with long-range correlated disorder distributed on the potential of the barriers. Even though the transmission of the particles through a graphene superlattice with white-noise potentials is suppres…
Polyaniline (PANI) and humic acid (HA) composite sorbents were prepared by adding different amount of HA into the chemical oxidation process of PANI. The sorbents were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, and N2 adsorption and desorption. Batch adsorptio…
Abstract This article deals with the feasibility of using recycled corrugated paper board (rPF) as the reinforcing material for recycled plastics. The composites of recycled polypropylene (rPP) and rPF were prepared by extrusion compounding and injection molding, and the rPP/rPF composites compatibilized by maleic anh…
We report on studies of the tailored self-assembly of the perylene diimide derivative, N,N'-ditridecylperylene-3,4,9,10-tetracarboxylic diimide, into structures with fibrous gel-type, one-dimensional, and two-dimensional morphologies. This approach for producing highly ordered nanostructures of well-defined morphologi…
Reversible topographical changes were observed on a photochromic diarylethene microcrystalline film surface by alternate irradiation with UV and visible light. Two types of surfaces were prepared from this film: 1) Storage of the film at 30 °C for 24 hours in the dark after UV irradiation afforded a surface that was c…
Superconductivity in doped BaFe2As2 is controlled by the charge of the (FeAs)δ− layers. Adjustment from electron to hole doping in Ba1−xKxFe1.86Co0.14As2 tailors the system from superconductivity to static magnetic order and back to superconductivity. When the charges compensate each other, the magnetic phase similar…
Abstract Photoluminescence from ZnO based films deposited by screen printing is studied. PL spectra of undoped films show strong broad green emission around 500 nm and a weak (nearly one fourth of visible) UV emission around 398 nm. Further enhancement of 30% in the green emission is observed as 5 at.% Ca is doped in…
Abstract Nano‐crystalline silver oxide films were deposited on glass and silicon substrates held at room temperature by RF magnetron sputtering of silver target under different oxygen partial pressures. The influence of oxygen partial pressure on the structural, morphological, electrical and optical properties of depo…
Al 3+ -doped Ni – Zn ferrites with composition of Ni 0.5 Zn 0.5 ( Fe 1-x Al x ) 2 O 4 (where x = 0, 0.012, 0.023, 0.035 and 0.045) were prepared by a method named "one-step synthesis." The magnetic and dielectric properties of the as-prepared Ni – Zn ferrites were investigated. X-ray diffraction data indicated that al…
Einfacher Richtungswechsel! Die Zweielektronenoxidation einer neuartigen zweikernigen Stibin-Gold-Verbindung bewirkt eine Umpolung der dativen Sb-Au-Bindung von Sb→Au im reduzierten zu Sb←Au im oxidierten Zustand (siehe Schema). Dieser reversible Prozess kann durch die Addition/Eliminierung eines Halogenmoleküläquival…
The development of a new generation of multifunctional biomaterials is a continual goal for the field of materials science. The in vivo functional behaviour of a new fusion protein that combines the mechanical properties of spider silk with the antimicrobial properties of hepcidin was addressed in this study. This new…
The potential use of silica gel functionalized with dendrimer-like, amino-terminated polyamidoamine polymers (PAMAM) as adsorbents for the removal of mercury ions from ethanol solution was evaluated. The adsorption isotherm and adsorption kinetics were investigated by using the batch method. The adsorption capacity wa…
The programming current required to switch a phase-change memory cell depends upon the thermal resistances in the device. In many designs, significant heat loss occurs through the electrode. This letter investigates the thermal properties of a multilayer electrode stack. This material offers greater thermal resistance…
First-principles calculations have been utilized to investigate the biaxial strain-dependent electronic properties of fully hydrogenated bilayer graphene. It has been found that after complete hydrogenation, bilayer graphene exhibits semiconducting characteristics with a wide direct band gap. The band gap can be tuned…
Calcium phosphate glasses, in which part of calcium oxide was replaced by lanthanum oxide, were prepared by using the conventional melt quench method. The structures of xLa2O3 · (50-x)CaO · 50P2O5 (x = 0, 1, 3, 6, 12 mol%) samples were investigated by X-ray diffraction (XRD), Raman spectrum, Fourier transform infrared…
The Weibull modulus, flexural strength, fracture toughness, Vickers microhardness, and chemical durability of sintered Li 2 O–SiO 2 glass ceramic specimens doped with P 2 O 5 or ZrO 2 were evaluated in accordance with the norm of EN ISO 6872. Peak crystallization temperatures, crystalline phases, and microstructure we…