Materials Literature
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Abstract In this article, the chemistry of interfacial adhesion between different additive systems has been dealt with to develop a high performance nanocomposite and in the process, a comprehensive study on the reinforcing effect of nanosilica has been carried out. The base polymer was considered as the blends of Pol…
In the system we consider, a pair of large hard spheres, whose surface separation is fixed at a prescribed value, is immersed in a binary mixture comprising small and medium hard spheres. The density profiles of the medium and small spheres near the large spheres are calculated using the three-dimensional integral equ…
D-3-hydroxybutyrate dehydrogenase from Alcaligenes faecalis catalyzes the reversible conversion between D-3-hydroxybutyrate and acetoacetate. The enzyme was crystallized in the presence of the substrate D-3-hydroxybutyrate and the cofactor NAD(+) at the optimum pH for the catalytic reaction. The structure, which was s…
Abstract In order to understand the contribution of nanoparticle surface area to the properties of nanocomposite materials, hydroxyapatite nanoparticles with different specific surface areas (60 m 2 · g −1 and 111 m 2 · g −1 ) were synthesized using reverse microemulsion and processed into nanocomposites. Experimental…
We present the anomalies at ∼200 K in electrical resistivity, transmittance and reflectance in the far-infrared region, and the magnetic susceptibility of α'-(BEDT-TTF) 2 IBr 2 [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene]. This phase transition is investigated by infrared, Raman, and far-infrared spectroscopies.…
Thermal electron beam (EB) technologies are becoming more and more attractive especially because they are ecologically friendly and energy saving on the one hand and highly precise, excellently controllable and highly productive on the other hand.Using three-dimensional energy transfer fields, the interaction conditio…
Abstract Composite compounds based on hemp and flax fibers in triethyl citrate plasticized starch acetate were prepared by melt processing. For better properties and processability, compounds with plasticizer contents in the range 20–35 wt% were screened. Composites were prepared with fiber contents up to 50 wt%. The…
The interaction of the PTA (PTA = 1,3,5-triaza-7-phosphaadamantane) ruthenium complex trans-[RuCl(2)(PTA)(4)] (trans-1) with visible light in chloroform and in water has been studied at room temperature. The complex trans-1 isomerizes to the cis isomer in CHCl(3) with radiation of lambda > 416 nm (Phi(434 nm) (CHCl(3)…
Five Chinese coal chars were prepared in a flat flame flow reactor that can simulate the conditions of real pulverized coal combustion. The kinetics of the NO−char reaction at 1273, 1373, 1473, and 1573 K was studied in a drop tube furnace. A new model of the high-temperature NO−char reaction that took into account th…
Polyaniline/nylon 6 blends were prepared from formic acid as a single solvent with various weight ratios of polyaniline (PANI). The optical, structural, morphological, thermal, and electrical properties of these blends were investigated. Blend films with PANI protonated with sulfanilic acid (SA) as a new protonating a…
We report the first synthesis of GeO 2 nanoparticles with six symmetrically arranged branches running along the long axis of each particle. The nanoparticles have a shape resembling that of a star fruit. A reverse micelle system with Triton X-100 serving as the capping surfactant for the aqueous phase and n-hexanol as…
Abstract An experimental, finite‐element analysis framework is utilized to estimate the deformation state in a modified version of the picture frame test. During the analysis, the effect of fiber misalignment and the deformation heterogeneity in the tested fabric, a 2 × 2 PP/E‐Glass twill, is accounted for and a force…
Abstract We describe the preparation of surfaces with controlled surface chemistry and topology combining both surface segregation of block copolymers and “breath figures” formation. For that purpose, an amphiphilic ABC triblock copolymer, that is, poly(2,3,4,5,6‐pentafluorostyrene)‐ b ‐polystyrene‐ b ‐poly[poly(ethyl…
Controlling the electronic structure of carbon nanotubes (CNTs) is of great importance to various CNT based applications. Herein the electronic fine structure of single-walled carbon nanotube films modified with 4-nitrophenyl groups, produced following reaction with 4-nitrobenzenediazonium tetrafluoroborate, was inves…
Abstract Poly(thianthrene phenylene sulfide) and poly(thianthrene sulfide) have been prepared by nucleophilic aromatic substitution polymerization of the activated monomer 2,7‐difluorothianthrene with bis thiophenoxide and sulfide nucleophiles, respectively. The resulting polymers are thermally stable, amorphous mater…
Abstract Insertion reactions between a liquid germylene 1 , and either a carbodiimide or dialkyl telluride lead to the formation of the group‐14‐metal(II) guanidinate complex 2 or the stable group‐14‐metal terminal alkyl tellurolate compound 3 , respectively. The complexes 2 and 3 were structurally elucidated by multi…
Abstract A new class of tetrathiafulvalene‐based microstructures fabricated by coordinative self‐assembly has been prepared by a solution process. Upon incorporation of Pb 2+ and Zn 2+ ions, 1D wirelike microstructures and spherical polymer particles were achieved, respectively (see picture). The neutral coordination…
Abstract The influence of microstructure on dilatation onset is analyzed in polyethylene (PE) under tension. Tests are performed by means of a video‐controlled testing system that gives access to true stress σ 33 —true strain ε 33 curve and records volume strain ε v during stretching. The results indicate that the str…
The softening of the radial breathing mode (RBM) of metallic single walled carbon nanotubes (m-SWNTs) due to electron-phonon coupling has been studied by observing the Fermi level [see text] dependence of the RBM Raman peak. In situ Raman spectra were obtained from several individual m-SWNTs while varying [see text] e…
We study heat and particle transport in a classical disordered, one-dimensional, hard-point gas model. We provide convincing numerical evidence that the figure of merit ZT diverges as a power law with the average particle number in the chain. This quite surprising result appears to be related to the ergodic and mixing…