Materials Literature
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Abstract The tensile properties of 16 blends prepared from 12 different polymers were investigated in the whole composition range. The composition dependence of Young's modulus has shown less, while that of the yield and ultimate properties exhibited more significant variations with miscibility. The quantitative evalu…
The band structures of the ferromagnetic compounds FeB, ${\mathrm{Fe}}_{2}$B, and ${\mathrm{Fe}}_{3}$B were calculated using a spin-polarized version of the first-principles self-consistent orthogonalized linear-combination-of-atomic-orbitals method. Results on the band structure, density of states (DOS), and site-, o…
We propose a theoretical interpretation of observed anomalous rheological behavior of diblock copolymers quenched into microphase-separated states having locally lamellar morphology with disorder. The proposed mechanism of the anomaly is associated with the second-sound modes occurring in a locally lamellar structure…
Abstract In many tropical soil systems, secondary minerals are coated with sesquioxides, resulting in inherently low P availability to plants due to P‐fixation mechanisms. Research was conducted to determine the influence of hydroponically grown clover ( Trifolium repens L.) residue pretreatment in reducing orthophosp…
The oxidation of single‐crystal in dry oxygen (10 −3 ‐1 atm and 1200°–1500°C) followed parabolic kinetics. The oxygen partial pressure dependence of the oxidation rate of the (0001) carbon face decreased with increasing temperature (from 0.6 at 1200°C to 0.3 at 1500°C). A kinetic model based on parallel transport of o…
The refractive index, the temperature coefficient of the refractive index, and the optical transparency of gadolinium gallium garnet are reported as a function of wavelength from the near UV to the middle IR. The materialis transparent enough for good optical components between 0.36 and 6.0 microm, and the refractive…
A simple expression for the mean-spherical-approximation (MSA) solution of the Ornstein-Zernike (OZ) equation in the Baxter formalism is presented for the case with n components and a single Yukawa term with factorizable prefactor: all coefficients of the MSA solution are given in terms of simple rational functions of…
The ${\mathrm{BaSn}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Sb}}_{\mathit{x}}$${\mathrm{O}}_{3}$ perovskite solid solution exists for 0.0 \ensuremath{\le}x\ensuremath{\le}0.2. The best electrical conductivity occurs for x near 0.15, and is essentially temperature independent from 300 to 5 K. The materials, alt…
The principle of equilibrium potential‐ p H diagrams (Pourbaix diagrams) is extended to the case of two‐dimensional species adsorbed on metals. Up to now, the only solid compounds taken into account in these diagrams have been three‐dimensional compounds. However, species may be adsorbed in E‐p H domains where three‐d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of soluble high molecular weight poly(aryl ether ketones) containing bulky substituentsWilhelm Risse and Dotsevi Y. SogahCite this: Macromolecules 1990, 23, 18, 4029–4033Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Publish…
In the first part of the paper it is shown that the impulse and virial theorems of inviscid incompressible fluid mechanics are special cases of a more general theorem from which an infinity of relations can be obtained. Depending on the problem, only a finite number of these relations may be independent. An applicatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of a highly stable iron porphyrin coordinated by alkylthiolate anion as a model for cytochrome P-450 and its catalytic activity in oxygen-oxygen bond cleavageTsunehiko Higuchi, Shinobu Uzu, and Masaaki HirobeCite this: J. Am. Chem. Soc. 1990, 112, 19, 7051–7053Publ…
We investigated the structural stabilities of eight arid zone soils using percent optical transmittance as a measure of flocculation-dispersion behavior. The soils were sodium saturated and their stabilities determined in sodium chloride solutions of varying concentrations. We treated the soils with hypochlorite for o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSmall lead sulfide (PbS) clusters prepared via ROMP block copolymer technologyV. Sankaran, C. C. Cummins, R. R. Schrock, R. E. Cohen, and R. J. SilbeyCite this: J. Am. Chem. Soc. 1990, 112, 19, 6858–6859Publication Date (Print):September 1, 1990Publication History Published…
Electrical steels are the most important magnetic materials produced in Europe where the total sales market is around £400 million per annum. Its main use is as the magnetic core material of rotating machines and transformers. When magnetised in such equipment, it dissipates iron losses (as heat) which use up around 5…
Abstract We report high‐resolution XPS data on three forms of the electrochemically synthesized polyaniline films: the highly conducting emeraldine salt form and the films obtained after KOH treatment and electrochemical reduction in HCI. The deconvoluted N 1s peaks in these films show clear evidence of the existence…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced Raman scattering of p-aminobenzoic acid at silver electrodeHongkun. Park, Sang Bok. Lee, Kwan. Kim, and Myung Soo. KimCite this: J. Phys. Chem. 1990, 94, 19, 7576–7580Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the pyrolysis of almond shells and almond shells impregnated with cobalt dichloride in a fluidized bed reactor and in a pyroprobe 100Rafael Font, Antonio Marcilla, Emilio Verdu, and Joaquin DevesaCite this: Ind. Eng. Chem. Res. 1990, 29, 9, 1846–1855Publication D…
We calculate the osmotic pressure in a semi-dilute solution of stretched polymers in a good solvent. The results are applied to polymer brushes where polymers are stretched either directly or by application of shear. It is shown that when a brush is sheared against the solvent, the stretching proceeds always within th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular weight dependence of lamellar domain spacing of diblock copolymers in bulkYushu Matsushita, Katsuaki Mori, Ryuichi Saguchi, Yasushi Nakao, Ichiro Noda, and Mitsuru NagasawaCite this: Macromolecules 1990, 23, 19, 4313–4316Publication Date (Print):September 1, 1990Pu…