Materials Literature
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The thermodynamic properties of double oxides in rare earth‐transition metal (V and Mn)‐oxygen ternary systems have been collected and evaluated to examine their stability using chemical potential diagrams plotted as log (α A /α B ) vs log ( P (O 2 )). The thermodynamic regularities of perovskites, pyrochlores, and ot…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of nonionic hydrogel, lipogel, and amphigel by copolymerization of 2-oxazolines and a bisoxazolineYoshiki Chujo, Kazuki Sada, Kazuaki Matsumoto, and Takeo SaegusaCite this: Macromolecules 1990, 23, 5, 1234–1237Publication Date (Print):March 1, 1990Publication Histo…
Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 11 April 1988Accepted: 28 April 1989Published online: 17 February 2012Keywordskinetic undercooling, Stefan problem, supercooledAMS Subject Headings35K05, 35R35, 80A20Publication DataISSN (print)…
The Maier–Saupe theory for liquid crystals is extended to describe poling by an electric field of side-chain polymers with π-conjugated acceptor–donor molecules as pendant groups. Applications of the theory are in the field of nonlinear-optical materials. By using a quasi-one-dimensional description of the acceptor–do…
The reflection intensities of polyaniline films (PANI) in the range of 250–800 nm have been determined using a reflection spectrometer at different potentials and p Hs. The effect of potential and p H on the colors of PANI and the mechanism of the redox reactions have been discussed.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, crystal structure and magnetic properties of a pyrazolate-bridged binuclear copper(II) complexThompson N. Doman, Donald E. Williams, J. Fred Banks, Robert M. Buchanan, Hsiu Rong Chang, Robert J. Webb, and David N. HendricksonCite this: Inorg. Chem. 1990, 29, 5, 10…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural coarsening of demixed polymer solutionsJ. H. AubertCite this: Macromolecules 1990, 23, 5, 1446–1452Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pubs.acs.org/doi/10.1021/ma00207a034https:/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAromatic polyamide blends: enthalpy relaxation and its correlation with phase phenomenaThomas S. EllisCite this: Macromolecules 1990, 23, 5, 1494–1503Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered structure of thermotropic liquid-crystal polymer. 1. Characterization of liquid-crystal domain textureToshio Shiwaku, Akemi Nakai, Hirokazu Hasegawa, and Takeji HashimotoCite this: Macromolecules 1990, 23, 6, 1590–1599Publication Date (Print):March 1, 1990Publication…
Abstract The response of a HDPE, a L‐LDPE and a PP homopolymer to processing conditions and processing stabilizer formulations in the 220°C to 280°C temperature range was investigated. The technique of multiple extrusion was used. Melt flow and melt flow ratio were measured after the first, third and fifth extrusion p…
A new version of a corona triode setup, allowing charging dielectric foils with a constant current, was developed. The charging current is kept constant by controlling the grid voltage. We show that the sample surface potential can be inferred from the grid voltage and present results of the uniformity of charge depos…
A new model of interstellar silicon chemistry is presented that explains the lack of SiO detections in cold clouds and contains an exponential temperature dependence for the SiO abundance. A key aspect of the model is the sensitivity of SiO production by neutral silicon reactions to density and temperature, which aris…
A two-dimensional rhombus tiling model with a matching-rule-based energy is analyzed using real-space renormalization-group methods and Monte Carlo simulations. The model spans a range from T=0 quasiperiodic crystal (Penrose tiling) to a random-tiling quasicrystal at high temperatures. A heuristic picture for the diso…
L-Malate dehydrogenase from the extremely thermophilic mathanogen Methanothermus fervidus was isolated and its phenotypic properties were characterized. The primary structure of the protein was deducted from the coding gene. The enzyme is a homomeric dimer with a molecular mass of 70 kDa, possesses low specificity for…
A computer model for the hysteresis phenomenon in ferromagnetic cores is presented. The determination of the B-H trajectories is based on Preisach's theory, and requires, as input data, the extrado function Be(H) which is the upper bound of the limiting hysteresis loop. The hysteresis model has been checked against me…
Abstract A methodology developed for modeling many aspects of high energy displacement cascades with molecular level computer simulations is reviewed. The initial damage state is modeled in the binary collision approximation (using the MARLOWE computer code), and the subsequent disposition of the defects within a casc…
An analysis of cascade and subcascade formation in fcc metals by D-T fusion neutron irradiation is made by fitting the experimentally observed distribution of cascade zone size and number of subcascades to the calculated primary recoil energy spectrum. The analysis is made by categorizing subcascades into closely spac…
Mullite/cordierite composite powders containing different proportions of cordierite were prepared by the sol‐gel method using boehmite, colloidal silica, and Mg(NO 3 ) 2 ·6H 2 O. Mullite and cordierite sols were prepared separately and mixed to form the composite sol. Mullitization temperature depends on the cordierit…
Phase transformations of pure ${\mathrm{ZrO}}_{2}$ at high pressure up to 60 GPa were investigated by using x-ray diffraction and micro-Raman-scattering methods. The existence of phase transformation at about 13 GPa was reconfirmed by the spectral change of in situ Raman scattering. A new phase transformation at 35 GP…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExchange interaction in multinuclear transition metal complexes. 14. Exchange interactions in a novel copper(II) linear-chain compound with ladderlike structure: Cu2(1,4-diazacycloheptane)2Cl4B. Chiari, Olivo Piovesana, T. Tarantelli, and P. F. ZanazziCite this: Inorg. Chem.…