Materials Literature
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This research was to evaluate a technical feasibility of making single-layer experimental particleboard panels from bamboo waste (Dendrocalamus asper Backer) by converting bamboo into strips, which are used to make laminated bamboo furniture. Variable factors were density (600, 700 and 800 kg/m3) and temperature of co…
Abstract Broadband dielectric spectroscopy is used to investigate molecular dynamics and charge transport in three hyperbranched polyester amides with hydroxyl, phenyl, and stearate terminal groups. At higher temperatures, the dielectric spectra are interpreted in terms of hopping conduction in a spatially randomly va…
One of the most important properties of very recently reported FeSe based superconductors is the robustness of their superconductivity under applied magnetic field. The synthesis and control of superconductivity in FeSe based compounds is rather a difficult task. Synthesis and physical property characterization for op…
Abstract An experimental investigation of the surface modification of polytetrafluoroethylene (PTFE) by an Ar and Ar/O 2 plasma created with an atmospheric‐pressure radio frequency (r.f.) torch is presented here. The surfaces were analyzed by atomic force microscopy (AFM), XPS and water contact angle (WCA) to get an i…
A simple method is proposed to improve the accuracy in prediction of drug solubility using the COSMO-SAC model. In this method, the data of solubility of drug in a pure solvent is used to determine any error in the COSMO-SAC model for the drug−solvent interactions. These values are then used to correct for the solubil…
The homologous series of three ring chiral esters with terminal chains, one 1-methylheptyl group and, one alkanoyloxyhexyloxy group, were studied. Compounds of these series are liquid crystals with smectic phases, that is, SmA, SmC* (ferroelectric phase) and SmC*A (antiferroelectric phase). The helical pitch was measu…
P57AS3 (P57), an oxypregnane steroidal glycoside, is known to be responsible for the appetite suppressing activity of HOODIA GORDONII, a dietary supplement used for weight loss. In this study, bioavailability, pharmacokinetics, and tissue distribution of P57 were determined in CD1 female mice after administration of a…
This paper reports on the structure development at nanometer and micrometer scale during the preparation of microfibrilar composites (MFC) based on oriented blends of polyamide 12 (PA12) and high-density polyethylene (HDPE). The composites were prepared in situ by means of conventional processing techniques: extrusion…
Five laterally methyl-substituted pyridine-based derivatives of the title compounds (I 8–I 16), with molecular formula 4-CnH2n+1O-C6H4COOC6H3(3-CH3)-N=N-C5H4N were prepared and their molecular formulae elucidated via elemental analyses, infrared, nuclear magnetic resonance and mass spectra. The number of carbon atoms…
Although ceramics have been known to mankind literally for millennia, research has never ceased. Apart from the classic uses as a bulk material in pottery, construction, and decoration, the latter half of the twentieth century saw an explosive growth of application fields, such as electrical and thermal insulators, we…
Lindqvist structures: We report the isolation of the all-vanadium(III) analogue (see figure) of the fully reduced (all-vanadium(IV)) hexavanadate structure from formal substitution of the {VIIICl}2+ and {VIVO}2+ fragments. The chemistry can be extended to the analogous CrIII and FeIII cluster anions. Magnetic data for…
A new substituted polythiophene derivative bearing malonic acid, poly(2-thiophen-3-yl-malonic acid), has been prepared and characterized using a strategy that combines both experimental and theoretical methodologies. The chemical structure of this material has been investigated using FTIR and (1)H NMR, and its molecul…
Inspired by mineralization in biological organisms, fabrication of higher ordered inorganic crystals induced by polymer chains has received much attention. In our present work, we made use of a widely used industrial material, carboxymethyl cellulose (CMC), to mediate the nucleation and growth of barium carbonate (BaC…
Surface-enhanced Raman scattering (SERS) was applied to detecting pentagon-heptagon pairs, the so-called Stone-Wales defect, in single-wall carbon nanotubes (SWCNTs). When a probing laser light was scanned over a SWCNT-dispersed silver surface, two distinct SERS spectra were obtained: (1) temporally stable spectra sim…
The electrodeposition of poly(3,4-ethylenedioxythiophene) (PEDOT) films from aqueous surfactant solution through a two-dimensional poly(styrene) (PS) template onto indium tin oxide (ITO) substrate has been investigated. The polymer grows in the interstitial spaces of the self-assembled PS spheres which were subsequent…
Interfaces between transition metal oxide compounds provide a setting where correlated behavior can emerge. Essential to interface studies are substrates that have a single atomic plane termination. By tuning the vapor pressure of La above the surface of La0.18Sr0.82Al0.59Ta0.41O3 (LSAT) during annealing, single-unit-…
The valence-band structure and the Fermi level (E(F)) position of ferromagnetic-semiconductor GaMnAs are quantitatively investigated by electrically detecting the resonant tunneling levels of a GaMnAs quantum well (QW) in double-barrier heterostructures. The resonant level from the heavy-hole first state is clearly ob…
NEXAFS spectroscopy was used to probe the surface composition and under-water surface reconstruction of thin films of comb-like diblock copolymers with cylindrical and spherical microphases. The polymers consisted of a polystyrene block, and a second block prepared from a styrenic monomer grafted with fluoroalkyl-tagg…
This work reports for the first time the influence of degree of branching (DB) on the thermoresponsive phase transition behaviors of hyperbranched multiarm copolymers. Two series of PEHO-star-PEOs (series A) and PEHO-star-PDMAEMAs (series B) with the hydrophobic DB-variable PEHO core and different kinds of linear arms…
We report a "mild anodization" (MA) process using aluminum oxalate (Alox) as an additive to suppress breakdown of porous anodic alumina (PAA) in the electrolyte of phosphoric acid at high potentials and comparatively high temperatures. It is shown for the first time that continuously tunable pore intervals (D(int)) fr…