Materials Literature
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Abstract Von strahlenchemisch durch Gasphasen‐Pfropfung hergestellten Pfropfprodukten aus Polyethylen und Styrol wurden die Anteile an Homopolymerem und gepfropftem Styrol, die Struktur der Pfropfprodukte (an Hand von elektronenmikroskopischen Aufnahmen) sowie einige mechanische Eigenschaften in Abhängigkeit von der P…
SUMMARY A previous study with a range of soils indicated that adsorption of copper could not be adequately described by the Freundlich equation. Adsorption curves for all but a highly calcareous soil could be divided into two straight lines with a marked increase in slope at low solution concentrations. A computer pro…
Abstract This paper describes the structure and derivation of ‘classical’ silicone fluids, giving the reactions for the production of dimethyl fluids by Miiller‐Rochow synthesis, polymerisation, direct synthesis, hydrosilylation, and transesterification. The properties of siloxanes are described, and the applications…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFailure mechanisms for organic coatings subjected to 0.1M sulfuric acidMalcolm L. White, Hyacinth Vedage, Richard D. Granata, and Henry Leidheiser Jr.Cite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 129–132Publication Date (Print):June 1, 1986Publication History Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbonization in a tube bomb. 1. Carbonization of petroleum residue into a lump of needle cokeIsao Mochida, Yozo Korai, Yasuhiro Nesumi, and Takashi OyamaCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 198–201Publication Date (Print):June 1, 1986Publication History P…
Ethylene oxidation to ethylene oxide and to carbon dioxide over silver catalysts was studied in a CSTR. The effects of two factors on the catalyst performance were examined. The first was the presence of excess ethylene oxide in the feed. A kinetic model was introduced which assumed that ethylene and ethylene oxide co…
Electron-energy-loss spectra of pure Li metal from 0 to ∼ 75 eV have been obtained for the first time in an analytical electron microscope. The spectrum is compared with density-of-states calculations and results from other spectroscopic techniques as well as with energy-loss spectra of slightly oxidized Li.
Abstract Silver island films are shown to be stable under normal laboratory conditions, and easy to use as optical sensors for the detection of traces of tetrasulphonated copper phthalocyanine. The surface‐enhanced Raman (SER) effect is used in conjunction with a resonance Raman (RR) increase in the analytical signal…
Abstract To combat the problem of specimen charging when analysing insulators with a high energy monochromatic AgLα x‐ray source for XPS in the VG ESCA3, the application and use of a low energy electron flood gun is investigated. It is found that individual specimens can require widely differing ‘optimum’ conditions f…
Abstract The approximate maximum and minimum amounts of any phase in a complex mineral mixture can be determined by solving a linear programming problem involving chemical mass balance and X-ray powder diffraction (XRD) data. The chemical information necessary is the bulk composition of the mixture and an estimation o…
Abstract Water vapor transmission rates can be reduced by as much as 50% in polyethylene by using talc as a filler. The oxygen permeability as well as water vapor transmission rates are similarly reduced by talc in nylon 6 films. The films show low elongation at break and reduced breaking strenth in the presence of ta…
Corrosion of a multi-phase Ag-Pd-Cu-Au-based commercial dental casting alloy and a Cu-Pd-rich and Ag-rich single-phase alloy was studied by open-circuit potential measurements, atomic absorption spectrometry, and electron spectroscopy. The alloys were immersed in an artificial saliva solution for 24 hr while the open-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal stability of aviation kerosines: techniques to characterize their oxidation propertiesDavid R. Kendall and John S. MillsCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 360–366Publication Date (Print):June 1, 1986Publication History Published online1 May 2002P…
Countermeasures to biofouling in simulated ocean thermal energy conversion heat exchangers have been studied in single-pass flow systems, using cold deep and warm surface ocean waters off the island of Hawaii. Manual brushing of the loops after free fouling periods removed most of the biofouling material. However, ove…
The determination of the dielectric and polarization behavior of silicate minerals is important in the understanding of chemical bonding and the evaluation of interionic potentials in model calculations. The analysis of crystal-defect energetics and the atomistic theory of diffusion processes rely heavily upon the pol…
Experimental investigations in the field of longitudinal wave propagation in beams are plentiful; however, experimental studies of flexural wave propagation problems are scarce and are restricted mainly to uniform and infinite structures where the effects of reflected waves are not generally included. This review is m…
The largest discrete iodocuprate(I) ion observed so far has been identified in the compound (pyH) 2 [Cu 3 I 5 ]. 36 CuI tetrahedra are linked through common edges to form a highly symmetrical polyanion [Cu 36 I 56 ] 20⊖ with the extremely rare symmetry 432 (O).
We obtained forces on 3.0 and 6.0 CRH, ogival-nosed projectiles penetrating a simulated geological target. A gas gun and a powder gun accelerated foundry core targets (a simulated soft sandstone) to steady velocities between 0.6–2.1 km/s, and the targets subsequently impacted 20.6 mm diameter penetrators. Rigid-body m…
Abstract Earlier studies by differential scanning calorimetry showed anomalous behavior of T g with varying amounts of dioctyl phthalate, while by dynamic mechanical analysis 2 T g 's were found over a limited concentration range. In this study, two adjacent T g 's were found over the complete range of concentrations…
Abstract The dehydration temperature of K-montmorillonite, obtained by ion exchange of a Na-mont-morillonite, was determined at pressures to 2 kbar, using high-pressure differential thermal analysis. Dehydration reactions were found at about 50° and 100°C above the liquid-vapor curve of water. At pressures above the c…