Materials Literature
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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…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRecovery of Very Dilute Acetic Acid Using Ion ExchangeFrikkie L. D. Cloete and Arno P. MaraisCite this: Ind. Eng. Chem. Res. 1995, 34, 7, 2464–2467Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs…
This paper summarizes the results of a worldwide round-robin test of high voltage DC (HVDC) insulators, which was carried out in six laboratories aiming at standardization of the method for artificial contamination tests on HVDC insulators. Flashover characteristics of three kinds, of specimens mere evaluated by the c…
The halogen-free shrinkproofing resin presented in this work is based on the natural protein collagen and a crosslinking agent, which provides a covalent linkage between the wool and the resin (collagen). Glycidylacrylate and the trifunctional epoxide Araldit PT 810 are applied as crosslinkers. Almost complete shrink…
Abstract This paper briefly describes the apparatus and experimental procedure for the modified miniature specimen test (MMST). The primary focus is on the thought and methodology of converting data. The accuracy and reliability of test results are emphasized. The fundamental relations for converting experimental data…
Polyurethane (PU) coatings on nylon fabric that have high moisture permeability and water repellency properties have been developed. These PU coatings are prepared by reacting ∈-caprolactam-4,4'-diphenyl methane diisocyanate (MDI) adduct with hydrophobic polyols; subsequently deblocking of ∈-caprolactam was carried ou…
The hydrothermal syntheses of the binuclear Mo(V) species (Et4N)[Mo2O4Cl3(H2O)3]·0.5H2O (3·0.5H2O) and of the hexanuclear (NH4)5Na4{Na[Mo6O12(OH)3(O3PC6H5)4)]2}·6H2O (1·6H2O) and (C6H5CH2NMe3)4K4{K2[Mo6O12(OH)3(O3PC6H5)4]2}·10H2O (2·10H2O) are described. X-ray crystallography revealed that both 1·6H2O and 1·10H2O cont…
Abstract A series of new materials, organic/inorganic polymer hybrids, are described, which are blends of molecular level dispersion between an organic polymer and a metal oxide such as silica. The new materials are transparent glassy solids, which are prepared by the sol‐gel reaction of a metal alkoxide in the presen…
Abstract Porous silicon layers are chemically grafted with trimethylsiloxy groups by exposure to hexamethyldisilazane (HMDS) vapors. After treatment, infrared spectroscopy reveals that part of the initially hydrogenated surface is actually modified. Luminescence of the porous layers appears to be little affected by th…
This paper investigates the problem of depositing the maximum possible charge on a sheet of porous material, such as cloth, using a corona discharge. In the experiments, 50 to 75 μm-thick samples of nylon parachute fabric of varying porosity were charged over a ground plane using corona ions generated by a pin array e…
Superconductivity in k ‐phase organic charge transfer salts and its relation to structural differences caused by the solvent present is analyzed on the basis of seven new superconductors in the BEDT–TTF system. The superconducting salts have T c S between 2.6 and 11.1 K. The electrocrystallization of the new materials…
Recently, a general technique for the measurement for the threading dislocation densities in epitaxic semiconductors by high-resolution X-ray diffraction was reported [Ayers (1994). J. Cryst. Growth, 135, 71–77]. Here, this method has been extended to the case of a Barrels five-crystal diffactometer by making use of k…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactive Groups on Polymer-Covered Electrodes. 2. Functionalized Thiophene Polymers by Electrochemical Polymerization and Their Application as Polymeric ReagentsH.-P. Welzel, G. Kossmehl, J. Schneider, and W. PliethCite this: Macromolecules 1995, 28, 16, 5575–5580Publication…
Silicon carbide has good oxidation resistance, due to the formation of a protective silica layer. Although amorphous silica is an excellent oxygen barrier, it is very sensitive to impurity elements, which affect its viscosity, oxygen diffusivity, and crystallization kinetics. This paper compares the oxidation rates of…