Materials Literature
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We have investigated the whole phase diagram of ${\mathrm{PbSc}}_{1∕2}{\mathrm{Nb}}_{1∕2}{\mathrm{O}}_{3}\ensuremath{-}{\mathrm{PbTiO}}_{3}$ (PSN-PT) solid solution by Raman scattering and compared the results to our recent x-ray and theoretical study on this system [R. Haumont et al., Phys. Rev. B 71, 104106 (2005)].…
The goal of the current study was to optimize important process parameters for electrospinning polycaprolactone (PCL) for growing 3T3 fibroblasts. We hypothesized that the smallest obtainable fiber diameter would provide the best cell growth kinetics and we tested this hypothesis for three different process parameters…
We report the results of a carbon-13 nuclear magnetic resonance spectroscopic investigation of the structure of carbon nanohorn aggregates (CNHs). The results show that CNHs consist of two components, characterized by different chemical shifts and spin lattice relaxation $({T}_{1})$ behavior. The first component has a…
Recent studies exploring the role of metal sulfides as (photo)catalysts in prebiotic synthesis reactions provide the impetus for finding carbon-free synthesis methods for metal sulfides. The decomposition of organosulfur and organometallic precursor compounds is often the protocol for synthesizing bulk metal chalcogen…
We have performed the first completely ab initio lattice dynamics calculation of the full orthorhombic cell of polyethylene using periodic density functional theory in the local density approximation (LDA) and the generalized gradient approximation (GGA). Contrary to current perceptions, we show that LDA accurately de…
Abstract The world of dendrimers presently encompasses several thousands of publications, including scientific papers and patents, several hundreds of different compositions, but only a few commercially available families of products ( i.e. polyamidoamines (PAMAMs), until recently polypropyleneimines, and phosphorus‐c…
Abstract The near-term and cost-effective production of solar hydrogen from inexpensive and readily available hydrogen containing compounds (HCCs) can boost the prospects of future hydrogen economy. In this paper, we assess the prospects of the solar-assisted conversion of HCCs into hydrogen using polyoxometalate (POM…
AIMS: The potential of a Sinorhizobium fredii strain to produce a copolymer from glucose and sodium dodecanoate substrates was investigated. METHODS AND RESULTS: Using an orthogonal design in a flask-shaker culture system, the vital regulation conditions for copolymer synthesis were optimized. These optimal results we…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTGas-Phase Surface Fluorination of Arabinoxylan FilmsMaria Gröndahl, Anna Gustafsson, and Paul GatenholmView Author Information Biopolymer Technology, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden Cite this: Macr…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTBending Soft Block Copolymer Nanostructures by Lithographically Directed AssemblyGregg M. Wilmes, David A. Durkee, Nitash P. Balsara, and J. Alexander LiddleView Author Information Department of Chemical Engineering, University of C…
Strong steels suffer from embrittlement due to dissolved hydrogen, a phenomenon which can be mitigated by trapping the hydrogen at carbide particles, where it is rendered benign. The precipitation and coarsening of plate-like M 4 C 3 carbides, during the tempering of quaternary Fe–C–Mo–V martensitic steels, has been c…
A series of novel noncentrosymmetric borates, MM'4(BO3)3 (M = Na, M' = Ca; M = K, M' = Ca, Sr), have been successfully synthesized via a standard solid-state reaction. The crystal structures have been determined by the SDPD (structure determination from powder diffraction) method. They crystallize in the noncentrosymm…
In this paper, we investigate effects of vacancy defects on fracture of carbon nanotubes and carbon nanotube/aluminum composites. Our studies show that even a one-atom vacancy defect can dramatically reduce the failure stresses and strains of carbon nanotubes. Consequently, nanocomposites, in which vacancy-defected na…
Extensive modeling of structural and vibrational properties of OH groups in kaolinite, a representative member of the clay family, has been studied within a periodic approach using the CRYSTAL03 program and adopting B3LYP functional with a polarized double-ζ Gaussian basis set. Optimized geometry and corresponding fre…
Abstract Because of their biocompatibility and total biodegradability, poly(3‐hydroxybutyrate) (PHB) and starch have attracted attention as promising raw materials for manufacture of single‐use plastic items and biomaterials. PHB/maize starch blends with starch contents in the range of 0–50 wt % were processed in an i…
Dimethacrylate-based networks were modified with well-defined organic−inorganic building blocks, i.e., polyhedral oligomeric silsesquioxanes (POSS). POSS were incorporated in the polymer networks either as dangling chains or as cross-linking points. For this purpose, the POSS functionality was varied. The influence of…
Abstract Four kinds of magnesium hydroxide (Mg(OH) 2 ) with different particle sizes are chosen and mixed with ethylene vinyl acetate copolymer (EVA) to investigate the effect of particle size on the flame retardancy of composites, which is evaluated by limiting oxygen index (LOI) testing, horizontal fire testing, and…
Abstract The effects of chitosan coating and vacuum packaging on the quality and shelf‐life of retail packaged grilled pork in a PVDC/nylon pouch during refrigerated storage at 2 ± 1°C were investigated. Grilled pork without chitosan coating and packaged in 100% air was used as the control sample. Firmness, pH, colour…
Two new magnetic chain compounds, where the anionic [M(N3)2(HCOO)-]n chains with a 3-fold bridge of two end-on azido and one syn-syn formato ligands are isolated by the cations of [(CH3)2NH2]+, exhibit metamagnetism because of the strong intrachain ferromagnetic coupling versus the weak interchain antiferromagnetic co…
We have used lattice Monte Carlo simulations to investigate the molecular assembly of symmetric diblock copolymer melts within cylindrical nanochannels. We studied the effect that the surface field has on the copolymer morphology in three cylinders having different diameters. Upon varying the strength of the surface f…