Materials Literature
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Abstract Poly( L ‐lactic acid) (PLLA)/gelatin blend membranes were prepared by solution casting method and using dimethyl sulfoxide (DMSO) as a cosolvent. Scanning electron microscopy measurement indicated that when the amounts of gelatin in PLLA/gelatin blend membranes are less than 5%, the sizes of phase separation…
The eight-band effective-mass Hamiltonian of the free-standing narrow-gap $\mathrm{InAs}$ quantum ellipsoids is developed, and the electron and hole electronic structures as well as optical properties are calculated by using the model. The energies, wave functions and transition probabilities of quantum spheres as fun…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Abstract The synergy of power ultrasound with screen printed electrodes and screen printed modified electrodes is shown to be possible and beneficial. Proof‐of‐concept is shown for the anodic stripping voltammetry of lead at screen printed electrodes and screen printed calomel modified electrodes offering shorter depo…
Abstract The reaction of poly(allyl azide) (PAA; number‐average molecular weight = 1800 g/mol) with N ‐phenyl maleimide, 4,4′‐bis(maleimidodiphenyl) ether, 4,4′‐(bismaleimidodiphenyl) sulfone, and 1,6‐bismaleimido hexane is described in this article. As indicated by Fourier transform infrared studies, the azido group…
Strains of Escherichia coli K12, including MG-1655, accumulate methyl-alpha-D-glucopyranoside via the phosphoenolpyruvate-dependent glucose:phosphotransferase system (IICB(Glc)/IIA(Glc)). High concentrations of intracellular methyl-alpha-D-glucopyranoside 6-phosphate are toxic, and cell growth is prevented. However, t…
Abstract Agricultural wastes such as olive pomace and barley bran have been transformed in plastic by esterification with fatty acid chlorides after acidic or alkaline delignification. These esterifications were carried out in homogenous solution DMA/LiCl by classical heating or microwave activation. The plastics obta…
Abstract Low plasticity burnishing (LPB) is a surface enhancement method that produces a deep layer of compressive residual stress with minimal cold working and an improved surface finish. Extensive fatigue testing, performed on numerous metal alloys in simulated environmental conditions, demonstrates that LPB signifi…
Abstract Interfacial agents as compatibilizers have recently been introduced into polymer blends to improve microstructure and mechanical properties of thermoplastics. In this way, it is possible to prepare a mixture of polymeric materials that can have superior mechanical properties over a wide temperature range. In…
We present experimental and theoretical results for the phase behavior of mixtures of oppositely charged globular protein molecules in aqueous solutions containing monovalent salt. These colloidal mixtures are interesting model systems, on the one hand for electrolyte solutions ("colloidal ionic liquids"), and on the…
Abstract The self‐condensing vinyl polymerization of an AB* monomer formed in situ by atom transfer radical addition from divinylbenzene (DVB) and (1‐bromoethyl)benzene (BEB) using atom transfer radical polymerization technique was studied. The catalyst concentration has a dramatic effect on polymerization. To study t…
When first published, Figures 4 and 5 were incorrect. The correct Figures 4 and 5 are shown below: Fracture surfaces after crack opening of CT-samples; left: Araldite-F, right: nano SiO2-reinforced. High magnification SEM at the crack tip zone.
Abstract We prepared waterborne polyurethanes based on isophorone diisocyanate, dimethylolpropionic acid, polyhexane neopentyl adipate glycol, or polyethylene–butylene adipate glycol through self‐emulsion (a prepolymerization process). Their IR and NMR spectroscopic properties were investigated, and the peaks of these…
A current switching effect of several orders of magnitude was observed in the incommensurate misfit layered compound ${(\mathrm{La}\mathrm{S})}_{1.196}\mathrm{V}{\mathrm{S}}_{2}$. This effect involves correlated vanadium ${t}_{2g}$ states in a hexagonal $[\mathrm{V}{\mathrm{S}}_{2}]$ layer. Application of moderate ele…
Abstract Summary: A mixture of poly(vinyl methyl ether) (PVME) and a polystyrene derivative bearing cinnamate groups (PSC) was chemically designed so that its phase separation can be tunable by visible light for computer‐assisted irradiation (CAI) experiments. This PSC/PVME blend exhibits a lower critical solution tem…
Abstract The properties of nano‐zinc oxide master batch filled butadiene styrene rubber (SBR) systems were researched in comparison with those of common zinc oxide and nano‐zinc oxide filled systems. First, the nano‐zinc oxide master batch was prepared and the cure characteristics of three different kinds of zinc oxid…
The structure and phase transition in lead zinc niobate (PZN) were studied using very high resolution powder neutron diffraction between 4.2 and 450 K. The structure is unequivocally rhombohedral in space group R 3 m with a = 4.060 48 Å and α = 89.8693° at 4.2 K. No low symmetry phases were observed, nor was an octahe…
Abstract The effect of five different metal oxides on the pyrolysis of poly(ethylene oxide) (PEO), polyacrylamide (PAM), and poly(vinyl alcohol) (PVA) was investigated using thermogravimetry. The presence of metal oxide did not influence the degradation of PEO while the order of metal oxide on the degradation rate of…
Abstract Polymer–clay composite material has been prepared by intercalation of polymeric ammonium salt onto the montmorillonite (Na–MMT) followed by grafted polymerization of hydroxyethyl methacrylate onto amine‐terminated poly(butadiene‐ co ‐acrylonitrile)–montmorillonite (ATBN–MMT) intercalate. The hydroxyl groups w…
Abstract Conducting polymers of alkylanilines, pyrrole, and their conducting composites were synthesized by oxidation polymerization. The oxidants used were KIO 3 and FeCl 3 for the polyalkylanilines and polypyrrole (PPy), respectively. Among the polyalkylanilines synthesized with KIO 3 salt, the highest conductivity…