Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSwelling of model poly(dimethylsiloxane) networksR. W. Brotzman Jr. and B. E. EichingerCite this: Macromolecules 1983, 16, 7, 1131–1136Publication Date (Print):July 1, 1983Publication History Published online1 May 2002Published inissue 1 July 1983https://pubs.acs.org/doi/10.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPotential dependence of surface-enhanced Raman scattering from citrate on colloidal silverC. G. Blatchford, O. Siiman, and Milton KerkerCite this: J. Phys. Chem. 1983, 87, 14, 2503–2508Publication Date (Print):July 1, 1983Publication History Published online1 May 2002Publish…
Abstract The resistance and resistivity of Ketjenblack EC/silicone rubber compounds were studied as function of strain in constant strain rate experiments. Both strain and rate of strain affect the electrical resistivity of the compounds. Such effects are carbon black concentration dependent. Ketjenblack EC, a low str…
Films selected for anticipated reaction with atomic oxygen, namely carbon, silver, and osmium, were exposed during the Shuttle STS‐4 mission. A silver film 225 ± 5 nm thick was converted to a transparent blue‐green interference film 355 ± 5 nm thick. Both carbon and osmium films 10‐30 nm thick apparently formed volati…
In an effort to advance our understanding of the principles governing the structures of and the hydrogen bonding in alkylammonium hexachlorostannates(IV), (R n NH 4−n ) 2 SnCl 6 , we have determined the room-temperature crystal structures of (Me 2 NH 2 ) 2 SnCl 6 and (Me 3 NH) 2 SnCl 6 (variants of the antifluorite st…
Abstract Treatment of ketones with bis(trimethylsilyl) peroxide and Lewis acid such as SnCl4 or BF3·OEt2 in dichloromcthane at room temperature affords esters in fair to excellent yields. Jasmine lactone is synthesized from 2-[(Z)-2-pentenyl]cyclopentanone by means of Me3SiOOSiMe3–BF3·OEt2 system without any protectio…
Abstract Montmorillonite has a heterogeneous charge distribution, and it is important to determine whether constant potential edge sites or constant charge sites control metal adsorption. The pH dependence of metal adsorption provides insight into the adsorption mechanism as well as being an important variable that wi…
The thermal and electrical conductivities, fracture strength, swelling, and microstructure of sintered alpha‐phase Sic and siliconized reaction‐bonded Sic materials were studied before and after irradiation with reactor neutrons. The effects of helium gas on the properties were studied using boron enriched in ' O B to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic mechanical properties of polystyrene containing microspherical inclusions of polybutadiene: influence of domain boundaries and rubber molecular weightFrank S. Bates, Robert E. Cohen, and A. S. ArgonCite this: Macromolecules 1983, 16, 7, 1108–1114Publication Date (Pri…
THE TWENTY-TWO known cases of congenital goiter, with or without cretinism, that are due to defective iodide concentrating ability have been compared. The defect may be total or partial, sometimes becomes clinically manifest long after the neonatal period, shows male predominance, and frequently occurs without evidenc…
The nylon oligomer (6-aminohexanoic acid cyclic dimer) degradation genes on plasmid pOAD2 of Flavobacterium sp. KI72 were cloned into Escherichia coli vector pBR322. The locus of one of the genes, the structural gene of 6-aminohexanoic acid linear oligomer hydrolase, was determined by constructing various deletion pla…
Abstract Porous solids have been simulated in the computer as assemblages of spheres. When such assemblages contain spheres distributed in size and randomly arranged in space, the structure of the resulting solid resembles that of a real porous solid. Monte Carlo calculations of gas molecule trajectories through the a…
Abstract A comprehensive review of the journal literature dealing with short-fiber reinforcement of various types of elastomers over the past decade indicates an underutilization of the potential for this type of reinforcing agent within the rubber industry. Whereas the properties of continuous cords are not necessari…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRedox conduction in mixed-valent polymersP. G. Pickup and Royce W. MurrayCite this: J. Am. Chem. Soc. 1983, 105, 14, 4510–4514Publication Date (Print):July 1, 1983Publication History Published online1 May 2002Published inissue 1 July 1983https://pubs.acs.org/doi/10.1021/ja00…
Detailed characteristics of electro-optic elements (color switching and memory) utilizing the spectral change of conducting polymers by electrochemical doping and undoping are studied. The response time of color switching, for example, red↔blue in polythiophene film in the electrolyte of LiBF 4 /acetonitrile is 30∼100…
Electron spectroscopy, combined with synchrotron radiation in the photon-energy range $h\ensuremath{\nu}\ensuremath{\simeq}60\ensuremath{-}190$ eV, was used to measure the angular distributions of Xe $5p$ and $5s$ photoelectrons and of ${N}_{4,5}\mathrm{OO}$ Auger electrons. The branching ratios and partial cross sect…
Formation of the ternary complex Met-tRNAi X eukaryotic initiation factor (eIF) 2 X GTP from eIF-2 X GDP requires exchange of GDP for GTP. However, at physiological Mg2+ concentrations, GDP is released from eIF-2 exceedingly slowly (Clemens, M.J., Pain, V.M., Wong, S.T., and Henshaw, E.C. (1982) Nature (Lond.) 296, 93…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of electron distributions of molecular orbitals by Penning ionization electron spectroscopyKoichi Ohno, Hideki Mutoh, and Yoshiya HaradaCite this: J. Am. Chem. Soc. 1983, 105, 14, 4555–4561Publication Date (Print):July 1, 1983Publication History Published online1 May 2…
Oscillations in the time evolution of electron diffraction during MBE growth of GaAs are shown to be related to periodic variations in the step distributions on GaAs surfaces during epitaxial growth. Unintentionally doped GaAs surfaces were first prepared by MBE. Then the Ga flux is interrupted until an instrument lim…
Abstract The hyperfine fields at 57 Fe and at 119 Sn doped as a dilute impurity replacing Ge, in the new Heusler alloys Ru 2 FeGe and Rh 2 FeGe, are reported. The Mössbauer spectra at 119 Sn indicate preferential RGe (R = Ru, Rh) disorder like in other Ru and Rh based Heusler alloys. The hyperfine field value is cons…