Materials Literature
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A water-equivalent plastic material RW-1, in the form of thin foils as well as of thicker sheets, has been produced by melting powdered polyethylene together with CaCO3 and MgO. The mixture has been developed in a three-step procedure, starting with provisional mixtures and using data from their measured attenuation c…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn XPS investigation of titanium dioxide thin films on polycrystalline platinumC. M. Greenlief, J. M. White, C. S. Ko, and R. J. GorteCite this: J. Phys. Chem. 1985, 89, 23, 5025–5028Publication Date (Print):November 1, 1985Publication History Published online1 May 2002Publi…
In this paper the translatory motion of a compound drop is examined in detail for low-Reynolds-number flow. The compound drop, consisting of a liquid drop or a gas bubble completely coated by another liquid, moves in a third immiscible fluid. An exact solution for the flow field is found in the limit of small capillar…
The initial rate of hydrolysis of six commercially available native (type l) celluloses was determined for the crude cellulase complexes of the thermophilic anaerobic bacterium C. thermocellum and the mesophilic fungus T. reesei. These rates were then compared with certain physical features of the substrates in an att…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in binuclear transition-metal complexes of a binucleating clathrochelate ligandMark D. Timken, William A. Marritt, David N. Hendrickson, Robert A. Gagne, and Ekk SinnCite this: Inorg. Chem. 1985, 24, 24, 4202–4208Publication Date (Print):Novemb…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly efficient sodium hypochlorite olefin epoxidations catalyzed by imidazole or pyridine "tailed" manganese porphyrins under two-phase conditions. Influence of pH and of the anchored ligandFernando Montanari, Michele Penso, Silvio Quici, and Patrizia ViganoCite this: J. O…
A phenomenological theory of the magnetic and magnetoelectric properties of boracites is developed, using the Landau-Dzialoshinskii approach. An interpretation is proposed for the main distinctive features characterizing eleven members of this family of compounds, namely the symmetry changes, the magnetic and magnetoe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDual-mode transport of penetrants in glassy polymersGlenn H. Fredrickson and Eugene HelfandCite this: Macromolecules 1985, 18, 11, 2201–2207Publication Date (Print):November 1, 1985Publication History Published online1 May 2002Published inissue 1 November 1985https://pubs.ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroelectrochemistry of a .mu.-nitrido-bridged iron phthalocyanine dimerLawrence A. Bottomley, Jean Noel Gorce, Virgil L. Goedken, and Claudio ErcolaniCite this: Inorg. Chem. 1985, 24, 23, 3733–3737Publication Date (Print):November 1, 1985Publication History Published onl…
The equilibrium phase diagrams of Cu–Cr, Cu–Mo, and Cu–W show no measurable solid solubility except for a small solubility of Cr in solid Cu at higher temperatures. Even in the liquid state, the mutual solubilities in these systems are very limited. Simultaneous vapor deposition of elements on unheated substrates was…
Abstract Structurally uniform polymeric phthalocyanines 5a – e , containing imido end groups, were synthesized by reaction of different derivatives of 1,2,4,5‐benzenetetracarboxylic acid, 2a – d , with metal salts, urea and a catalyst. 5a – e were converted into polymers 3 , 4 and 6 , containing anhydride, carboxylic…
Atomic pair correlation functions for liquids provide an image of temperature-dependent short-range order. If the thermal ensemble of atomic configurations is mapped (by steepest descent on the potential hypersurface) onto potential energy minima, the pair correlation function from the resulting transformed configurat…
Abstract Polymers 3 were prepared by reaction of 1,2,4,5‐benzenetetracarbonitrile ( 2 ) or 2,3,9,10,16,17,23,24‐(29 H , 31 H )‐phthalocyanineoctacarbonitrile ( 5a ) with various metal salts or metals. The polymer structures were investigated by comparing their IR and UV/VIS spectra with those of 5 . Structurally unifo…
The transpassive dissolution of Ni in acidic sulfate media, including the influence of crystallographic orientation, was investigated. The surface plane had low index values, that is (100), (110), and (111). This study was largely based on the analysis of complex impedance. (100) and (110) specimens showed identical e…
Abstract From this work, one can conclude that compositions which have excellent mechanical properties can be prepared by melt-mixing thermoplastic vulcanizates. (A thermoplastic vulcanizate is a composition containing vulcanized rubber particles dispersed in a thermoplastic. Such a composition is usually prepared by…
EPR spectra of ${\mathrm{Cr}}^{3+}$, S=(3/2), substituting for ${\mathrm{Ti}}^{4+}$ are reported as a function of temperature T in all four phases of ${\mathrm{BaTiO}}_{3}$. In the three ferroelectric phases (FEP's), the principal axis of the Hamiltonian is always along the polar axis. There are two crystal-field term…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic properties of dimeric disubstituted-triazole copper(II) compounds. X-ray structure of bis[.mu.-3,5-bis(pyridin-2-yl)-1,2,4-triazolato-N',N1,N2,N"]bis[aqua(trifluoromethanesulfonato-O)copper(II)]Rob Prins, Paul J. M. W. L. Birker, Jaap G. Haasnoot, Gerrit C. Verschoo…
Abstract Models for helicoidal cholesteric structures are proposed for some cellulose derivative/solvent systems. The pitch of these structures is determined by independent methods as a function of temperature, concentration, solvent, degree of polymerization. The results are discussed on the basis of available theore…
Fully dense aluminas, prepared by hot‐pressing, were found to swell during annealing at 1600°C in air, but not during annealing in a reducing atmosphere (po 2 = 10 ‐7 Pa). The reaction followed the relation p ‐ po = ‐K log t, where p o and p are the initial and final densities, respectively, t is the time, and AT is a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanical measurements in the reaction bath during the polycondensation reaction, near the gelation thresholdM. Adam, M. Delsanti, and D. DurandCite this: Macromolecules 1985, 18, 11, 2285–2290Publication Date (Print):November 1, 1985Publication History Published online1 Ma…