Materials Literature
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This report presents a comprehensive literature review of the thermal decomposition products of polypropylene evolved under pyrolytic and oxidative conditions and the acute toxicity of combustion products of this polymer. Generally, the pyrolysis products of polypropylene (300–700°C) were aliphatic saturated and unsat…
The crystal structure of ${\mathrm{Li}}_{2}$${\mathrm{FeS}}_{2}$ has space group P3\ifmmode\bar\else\textasciimacron\fi{}m1 with a=3.902(1) A\r{}, c=6.294(2) A\r{}, U=83.00 A${\r{}}^{3}$, and Z=1. The structure refinement gives a final residual ${R}_{f}$=0.043 for 283 observations and nine variables (from single-cryst…
Evidence is presented that will establish the role of mechanical strain in promoting surface absorption of hydrogen by rupturing surface films on AISI(1) 4340 steel in alkaline 3.5% sodium chloride solution. Such bare surface generation is shown to substantially influence the alloy’s hydrogen cracking susceptibility.…
This article describes how principles of electronegativity can be applied to explain not only the bonding but also the physical and chemical properties of elements and molecules, their structure, and their energy.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of viscoelastic relaxation in amorphous polypropylene near Tg by dynamic light scattering and shear creepG. Fytas and K. L. NgaiCite this: Macromolecules 1988, 21, 3, 804–811Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published i…
Abstract Fifteen reference patterns of oxides, nitrides, borides, carbides, silicides, and sulfides are included in this report. The general methods of producing these X-ray powder diffraction reference patterns are described in this Journal, Vol. 1, No. 1, pg. 40(1986). Samples were mixed with one or two internal sta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of the dehydrochlorination rate on the degradation mechanism of poly(vinyl chloride)T. Hjertberg, E. Martinsson, and E. SoervikCite this: Macromolecules 1988, 21, 3, 603–609Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Publishe…
The structure of amorphous partially oxidized nickel tetrathiolato polymers has been studied by EXAFS and LAXS (large angle X-ray scattering).These polymers are the following: (i) the poly(nickel ethylenetetrathiolates) with different countercations, referred to as [(Ni-ett)Na0.j1]"(la), [(Ni-ett)Ko2J]" (lb), [(Ni-ett…
The crystallographic concepts of lattice and space group are extended to describe materials with crystallographically forbidden point groups, and a complete classification of all two-dimensional space groups with rotational order less than 23 is given.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTXPS characterization of glassy-carbon surfaces oxidized by O2, CO2, and HNO3S. R. Kelemen and H. FreundCite this: Energy Fuels 1988, 2, 2, 111–118Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://pubs.ac…
Well‐resolved FTIR spectra of iron oxide and iron carbonate corrosion scales are readily measurable with commercial instrumentation on otherwise untreated low alloy steel coupons. These spectra are relatable to the chemical history of the corrosion process. The absorption maxima of most of the 11 crystalline iron oxid…
Abstract Surface tension studies of the most common fluorosilicone, poly(3,3,3‐trifluoropropylmethylsiloxane) (PTFPMS), give unexpected results. Compared to polydimethylsiloxane (PDMS), the liquid surface tension is higher, the critical surface tension of wetting similar, and the solid surface tension, determined by w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-resolution core level photoelectron spectra of solid TCNQ: determination of molecular orbital spatial distribution from localized shake-up featuresJohn M. Lindquist and John C. HemmingerCite this: J. Phys. Chem. 1988, 92, 6, 1394–1396Publication Date (Print):March 1, 19…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and molecular structure of [Al(CH3)3][12]aneS4: a novel example of an axially stabilized trigonal bipyramidal coordination of aluminumGregory H. Robinson and Samuel A. SangokoyaCite this: J. Am. Chem. Soc. 1988, 110, 5, 1494–1497Publication Date (Print):March 1, 19…
The well known, extremely reactive [18]annulene 1 and the hypothetical isomer 2 should be capable of being stabilized by CH2- and CHCH-groups as internal and external bridges, respectively. The corresponding hydrocarbons, 3 and 4, are still unknown, although they are of great interest as links between the non-natural…
Highly conducting and transparent thin films of undoped tin oxide (SnO 2 ) are prepared on unheated substrates (≦90°C) by rf magnetron sputtering under an applied external dc magnetic field. The lowest resistivity obtained is 1.9×10 -3 Ωcm. The SnO 2 films with a sheet resistance below 200 Ω/ s q and an average visibl…
Several chalcone derivatives exhibiting second harmonic generation up to 5 times that of urea under IR-excitation have been synthesized by varying the substituents on both phenyl-rings.
We present the first calculations, by computer simulation, of the Frank elastic constants of a liquid crystal composed of freely rotating and translating molecules. Extensive calculations are performed for hard prolate ellipsoids at a single density, and for hard spherocylinders at three densities. For ellipsoids, the…
Typical DC characteristics and X-band noise parameters are presented and qualitatively correlated wherever possible with other technological or experimental data. While certain general trends can be identified, further work is needed to explain a number of observed phenomena. A design technique for cryogenically coole…
A survey is presented of recent developments in NO{sub x} removal processes. Particular attention is paid to selective catalytic reduction, with emphasis being placed on catalysts for the reduction of NO{sub x} from stationary sources. Chapters are included on: sources of nitrogen oxides and emission standards, contro…