Materials Literature
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Abstract Polyaniline (PANI) “nanograss” was grown on carbon nanofibers (CNFs). The cure behavior of an epoxy resin with and without unmodified CNFs or PANI modified CNFs was studied by means of non‐isothermal and isothermal differential scanning calorimetry (DSC). CNFs accelerated the reaction of epoxy and diamine. PA…
Abstract In this study, we investigated the effect of an aromatic polymer, styrene–ethylene–butadiene–styrene (SEBS), on the water‐tree resistance of crosslinked polyethylene (XLPE), and the synergetic effect of SEBS and ethylene vinyl acetate (EVA) was also investigated. The XLPE/SEBS and XLPE/SEBS/EVA samples were c…
Single walled carbon nanotubes (SWNTs) were dispersed and exfoliated in four different homopolymer oligonucleotides (dA 15, dG 15, dC 15, and dT 15 ). The dispersed nanotube concentration and degree of exfoliation were measured for each nucleobase. The nanotubes were more highly exfoliated and more temporally stable i…
Abstract Dicopper dicarboxylates [( R 3 P) m Cu X Cu(P R 3 ) m ] ( 5a , X = O 2 CCO 2 , R = Ph, m = 2; 5b , X = O 2 CCO 2 , R = n Bu, m = 3) were prepared by treatment of [Cu 2 O] ( 1a ) with HO 2 CCO 2 H ( 2a ) in presence of P R 3 ( 4a , R = Ph; 4b , R = n Bu). A further synthesis approach to mono‐ and dicopper dica…
Abstract The structures of a series of decaphenyl metallocenes (Ph 5 Cp) 2 M , which model superbulky metallocenes, are calculated by means of density functional theory including a semi‐empirical correction for dispersion interactions (DFT+D). Through a detailed investigation of the calcocene it is shown that the inte…
High-quality potassium tantalate (KTaO 3, KT) single crystals are grown by a high-temperature self-flux solution modified method in which potassium carbonate (K 2 CO 3 ) and boron oxide (B 2 O 3 ) are utilized as a complex flux. Additions of small amounts of boron oxide, used because of its low melting temperature (45…
We consider the metal-to-insulating transition on the electrical and optical characteristics of a single polyaniline (PANI) nanowire that was synthesized by nanochannel-assisted chemical oxidative polymerization. After treatment with a solution at pH 2, the conductivity of the PANI nanowire decreased to ∼0.95 S/cm, wh…
A mesoporous pure-silica-zeolite (PSZ) MFI low dielectric ( k ) film with smooth surface morphology was successfully synthesized using a centrifuged coating solution composed of a solution with PSZ MFI nanoparticles and surfactant Tween 80. The zeolite nanoparticles were prepared using TEOS as the silica source throug…
In this study, the dissolution of CoO from CoO/Al 2 O 3 catalyst with HCl, H 2 SO 4, and HNO 3 solutions was investigated in a batch reactor employing parameters that were expected to affect the dissolution rate of cobalt, such as stirring speed, temperature, and acid concentration. It was found that 99.82% of cobalt…
Abstract A stereo diblock polylactide di‐sb‐PLA consisting of PDLA and PLLA in a block ratio of 2:8 was prepared and mixed with PDLA to investigate the effect of enantiomer adjustment on the sc crystallinity. Each of these polymer blends was found to have improved stereocomplexibility which was changed with the PDLA c…
Abstract Highly luminescent Eu‐containing copolymers were synthesized through the copolymerization of Eu‐complex monomer featuring TTA and 5‐acryloxyethoxymethyl‐8‐hydroxyquinoline with MMA, and characterized by FT‐IR, UV–Vis, GPC, TGA, and DSC. The results indicated that the copolymers have not only a good solubility…
Abstract Fluorescence yield (FY) X‐ray absorption spectroscopic experiments with a grazing‐ exit geometry for detection of emitted fluorescence were carried out. The observed XAFS spectra provide the information about depth‐resolved chemical state in the surface layer of film materials through the take‐off angle depen…
Abstract PNCPy was prepared by anodic polymerization and its properties in both doped and undoped state were characterized. The doping level of the oxidized material has been found to be larger than that of other conducting polymers; the more relevant electrochemical properties of the doped material were retained afte…
We report a comprehensive transverse-field $\ensuremath{\mu}\text{SR}$ study of ${\text{Cu}}_{x}{\text{TiSe}}_{2}$. The magnetic penetration depth was found to saturate at low temperature as expected in an $s$-wave superconductor. As $x$ is increased we find that the superfluid density increases and the size of the su…
Abstract We report on shear‐induced nanotube agglomerate formation in low viscous multiwalled carbon nanotube/epoxy suspensions during steady shear rate step tests. A combined setup allows monitoring of the electrical, rheological, and optical properties of the system. High initial shearing was found to be necessary t…
UNLABELLED: The structure of vertically aligned carbon nanotubes (CNTs) severely depends on the properties of pre-prepared catalyst films. Aiming for the preparation of precisely controlled catalyst film, atomic layer deposition (ALD) was employed to deposit uniform Fe(2)O(3) film for the growth of CNT arrays on plana…
Although a poor catalyst under dry conditions, γ-Al 2 O 3 -supported gold (Au/γ-Al 2 O 3 ) turns out to be a superior CO oxidation catalyst under moisture conditions. In this work, extensive density functional theory calculations have been carried out to investigate the physical origin of the moisture promotion effect…
Abstract The band alignment at the interface between Pt and O‐terminated ZnO(000 1 ) was investigated by depositing Pt films on ZnO using X‐ray photoelectron spectroscopy and ultra violet photoelectron spectroscopy in an ultrahigh vacuum system. Angle‐resolved X‐ray photoelectron spectroscopy measurement showed the ba…
A procedure that measures both the silica concentration and the ratio of silica to alkali content of the commercially important sodium silicate solutions using an ATR FT-IR spectrophotomer has been developed. The accuracy and precision have been found to be equal to or better than the commonly used measures via titrim…
Spherical polyelectrolyte brushes consisting of a magnetite/polystyrene nanocomposite core and a poly(acrylic acid) brush shell were prepared by photo-emulsion polymerization. They are narrowly dispersed, superparamagnetic and redispersible after aggregating by external magnetic field, as determined by transmission el…