Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnusual proton NMR properties of tungsten(II) tris(pyrazolyl)borate hydride complexesA. J. M. Caffyn, S. G. Feng, A. Dierdorf, A. S. Gamble, P. A. Eldredge, M. R. Vossen, P. S. White, and J. L. TempletonCite this: Organometallics 1991, 10, 8, 2842–2848Publication Date (Print…
The oxidation ability of O 2 , O 3 , atomic oxygen, NO, N 2 O, and NO 2 was estimated by thermodynamic calculation. The calculation was carried out on the equilibrium state of Cu 2 O/CuO, considering the temperature dependence of Gibbs free energy of formation. Gases such as NO 2 , O 3 , and atomic oxygen were proven…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTwo-phase model for continuous final-stage melt polycondensation of poly(ethylene terephthalate). 2. Analysis of dynamic behaviorHerve Castres Saint Martin and Kyu Yong ChoiCite this: Ind. Eng. Chem. Res. 1991, 30, 8, 1712–1718Publication Date (Print):August 1, 1991Publicati…
Abstract New tetraphenylated heterocyclic diol, 2,5‐bis(4‐hydroxyphenyl)‐3,4‐diphenylfuran, was synthesized by the oxidative coupling of 4‐methoxydeoxybenzoin as a starting material, followed by simultaneous cyclodehydration and demethylation. Tetraphenylfuran‐containing polyarylates with inherent viscosities of 0.2–0…
The sensation of warmth or coolness to touch when skin is brought into contact with a fabric is a transient heat conduction phenomenon and contributes to the per ception of comfort of a garment. The aim of this study is to establish what fabric properties influence thermal touch sensations. Experiments were conducted…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorescence probe studies of self-assembled monolayer filmsShaun H. Chen and Curtis W. FrankCite this: Langmuir 1991, 7, 8, 1719–1726Publication Date (Print):August 1, 1991Publication History Published online1 May 2002Published inissue 1 August 1991https://pubs.acs.org/doi/…
Abstract This paper deals with the characterization of the mechanical properties of Kevlar/nylon composites. It has been shown that addition of up to 5 % Kevlar to nylon matrices (nylon‐6, nylon‐ 11, and nylon‐6,6) is possible by melt blending, and results in improved mechanical properties as compared to the pure matr…
Diamond‐like carbon (DLC) films have been deposited by RF plasma‐assisted chemical vapor deposition from acetylene at temperatures of 100–250°C, power densities of 0.1–0.2 W · cm −2 , and substrate biases of −80 to −200 V dc. The films have been annealed in vacuum at temperatures up to 590°C for 3–4 h. Ellipsometry an…
Over 280 programs for the analysis of powder diffraction data have been identified in this compilation. On the basis of information supplied by the program authors, the programs have been grouped into categories appropriate to the major type of calculation performed. The 21 categories which
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPressure-induced spin-state crossovers in six-coordinate cobalt(II) complexes: a near-edge x-ray absorption studyC. Roux, J. Zarembowitch, J. P. Itie, M. Verdaguer, E. Dartyge, A. Fontaine, and H. TolentinoCite this: Inorg. Chem. 1991, 30, 16, 3174–3179Publication Date (Prin…
Abstract The sorption behavior of water and ethanol on starch material has been investigated in relation to the adsorptive separation of water from ethanol. The adsorption isotherms of water‐starch, ethanol‐starch and water‐ethanol‐starch were measured using a Cahn electrobalance. Careful examination of the many sorpt…
Hexamethyldisiloxane (HMDSO) based films containing silicon monoxide (SiO) were obtained by a plasma process. The HMDSO hybrid films were prepared on the substrates by evaporating SiO during HMDSO plasma polymerization in rf discharge. SiO was evaporated by heating in rf plasma consisting of HMDSO and oxygen at a pres…
Comprehensive refractive-index measurements of 3-methyl-4-nitropyridine-1-oxide in the visible and near infrared are reported together with the phase-matching properties for collinear second-harmonic and sum-frequency generations in the principal dielectric planes. Noncollinear second-harmonic generation phenomena in…
A recombinant cosmid carrying the Methanobacterium thermoautotrophicum Marburg trp genes was selected by complementation of Escherichia coli trp mutations. A 7.3-kb fragment of the cloned archaeal DNA was sequenced. It contained the seven trp genes, arranged adjacent to each other in the order trpEGCFBAD. No gene fusi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTri-armed star polymers by living cationic polymerization. 1. Trifunctional initiators for living polymerization of isobutyl vinyl etherHajime Shohi, Mitsuo Sawamoto, and Toshinobu HigashimuraCite this: Macromolecules 1991, 24, 17, 4926–4931Publication Date (Print):August 1,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of the new quaternary one-dimensional chain materials, potassium copper niobium selenides, K2CuNbSe4 and K3CuNb2Se12Yingjie Lu and James A. IbersCite this: Inorg. Chem. 1991, 30, 17, 3317–3320Publication Date (Print):August 1, 1991Publication H…
Using solution thermodynamic theory, a Ni‐Cr Si alloy, based on the Ni/Cr ratio of AWS BNi‐5 (Ni‐18Cr‐19Si (atom%)), was designed for brazing SiC ceramics. The optimum thermodynamic composition was computed to be Ni‐14.3Cr‐36Si (atom%). Brazing experiments were conducted to assess the effect of changing the Si content…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
The crystal structure of magnesium boron nitride in the low-pressure phase, Mg3BN3(L), has been solved ab initio from X-ray powder data. The cell is hexagonal (space group P63/mmc, Z = 2) with a = 3.54453 (4), c = 16.03536 (30) Å. Initial positional parameters for the Mg atoms were obtained from Patterson functions ge…
Many solid-state chemical reactions are accompanied by the evolution of heat (I). The amount of heat evolved varies over a wide range (e.g. 300 to 1200 cal gI) and is determined by the chemical system. In conventional methods used to synthesize inorganic materials, the reactants are usually heated in furnaces at high…