Materials Literature
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Nanoscale tubular biomaterials (e.g. see Fig.) produced by the self‐assembly of peptide nanotube structures have a potentially wide range of applications in chemistry, biology, and materials science. The methods of producing such structures are reviewed and a number of potential applications discussed magnified image .
Abstract Small colloidal particles *) and clusters *) of semiconductors and metals exhibit unusual properties and may be considered as a new physico‐chemical dimension between the molecules and the bulk materials. The surface to volume ratio is extremely large; small‐particle research therefore constitutes a combinati…
Abstract The application of the technique of observing the light scattering from solid polymers for the study of amorphous phase separation, spherulitic crystallization, phase separation in crystalline polymers, and coarsening of liquid crystal polymers is reviewed. The effect of shear and electrical and magnetic fiel…
The diffusion bonding (DB)/superplastic forming (SPF) manufacturing process, for titanium 6A1/4V material, has been developed within British Aerospace for the manufacture of military aircraft components. Diffusion bonding of titanium alloys offers the potential for parent metal joint strengths, and when combined with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Graft Copolymers with Molecularly Uniform Urethane-Based Side Chains with Special Structural ElementsClaus D. Eisenbach and T. HeinemannCite this: Macromolecules 1995, 28, 14, 4815–4821Publication Date (Print):July 1, 1995Publication History…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffective Thermal Conductivity of Monolithic and Porous Catalyst Supports by the Moment TechniqueKirali Murtezaoglu, Esra Oray, Timur Dogu, Gulsen Dogu, Nurdan Saracoglu, and Canan CabbarCite this: J. Chem. Eng. Data 1995, 40, 4, 720–725Publication Date (Print):July 1, 1995P…
Abstract The self‐assembly of a binary mixture of polystyreneblock‐polybutadiene (SB) and poly(methyl vinyl ether) (PVME) was studied by transmission electron microscopy and time‐resolved light scattering. The self‐assembly studied involved first microphase separation, in which a microdomain structure composed of poly…
Abstract Flory‐Huggins interaction parameters χ were determined by means of equilibrium vapor pressures (measured via a combination of a head‐space sampler with a gas chromatograph) and light scattering as a function of composition and temperature for the systems cyclohexanone/polystyrene [CHO/PS] and cyclohexanone/po…
The field induced transition from the space modulated spin structures to the homogeneous antiferro-magnetic state in magnetic ferroelectrics R x Bi1–x FeO3 (R = La3+, Nd3+, Dy3+) was investigated. It has been established that space modulated spin structures (SMSS) exists in compounds: with La up to concentration x = 0…
Abstract The present paper explores an effective means of characterizing structural changes of poly(vinyl chloride) (PVC) particles during gelation and fusion of PVC plastisols with small angle light scattering (SALS). The SALS method was shown to provide an in situ observation of swelling of PVC particles as well as…
Abstract Tetrads 3 and 5 consisting of 1,2-phenylene-bridged zinc diporphyrin (D), zinc porphyrin (M), pyromellitimide (I), and quinone (Q) were synthesized. Upon photoexcitation, these tetrads provide fully charge separated ion pair states (D)+—M—I—(Q)−, whose lifetimes are longer than those of corresponding Q-free t…
Helium reemission, trapping, and thermal desorption from highly ordered pyrolytic graphite (HOPG and HPG) of different orientation, polycrystalline graphite (EK98), and titanium doped graphite (RG-Ti-91) have been measured at irradiation temperatures of 300 K and 800 K. The implantation was performed with a 40 keV 4He…
Two blends of acrylonitrile-butadiene-styrene with unplasticised poly (vinyl chloride) and a tertiary blend of acrylonitrile-butadiene-styrene, unplasticised poly (vinyl chloride) and poly (propylene) containing a smoke sup pressing iron compound gives good reductions in smoke and high yields of car bonaceous char whe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplete Density Functional Normal Coordinate Analysis of Dichlorosilicon PorphyrazineDieter Braun and Arnout CeulemansCite this: J. Phys. Chem. 1995, 99, 28, 11101–11114Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 Ju…
Abstract Phenomenologically, a primary dopant for a conducting polymer is a substance which drastically changes the electronic, optical, magnetic, and/or structural properties of the polymer and is accompanied by a large increase in conductivity. Phenomenologically, a secondary dopant is an apparently “inert” substanc…
A setup designed for characterization of a diamond film during its growth in a dc plasma jet chemical vapor deposition reactor is described. It is composed of a pulsed laser and the detector is gated in order to synchronize the Raman detection with the laser pulses. The optical components are designed for working in t…
The hexatic smectic B (Hex B) phase is commonly encountered among hydrogen-bonded liquid crystal materials. Among enaminoketone and Schiff's base compounds, twenty homologous series (c. 102 compounds) exhibiting orthogonal mono-or bi-layer hexatic phases were identified by combined microscopy and DSC. Phase transition…
We propose a thin film transformer for small electronic devices, and apply the integral equation method to analyze this transformer. Both the primary and secondary coils of the film transformer are arranged coaxially on the layer and multiply laminated. The operation principal of the transformer is based on the skin e…
Abstract Accurate description of chemical and physical properties form the basis of chemical research, development, and commercialization of chemistry into products. The operating conditions for the chemical process are usually quite specific and are the focus of the entire commercialization activity. With the commitm…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental and Theoretical Characterization of the Gas-Phase NSO2- IonNelson H. Morgon, Harrald V. Linnert, and Jose M. RiverosCite this: J. Phys. Chem. 1995, 99, 30, 11667–11672Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published in…