Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution crystallization of poly(ether ether ketone)Andrew J. Lovinger and D. D. DavisCite this: Macromolecules 1986, 19, 7, 1861–1867Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pubs.acs.org/doi/10.1…
The three dimensional shape effect of asperity on abrasive wear was investigated with in-situ experiments in the scanning electron microscope. The geometry of model asperity was represented by attack angle and dihedral angle, where attack angle changed in 0∼90 deg and dihedral angle in 0∼180 deg. Wear modes of shearin…
The synthesis and characterization of pyrazine-bridged polymers of iron(II/III), ruthenium(II/III), and osmium(II/III) octaethylporphyrin (dubbed "shish-kebab" polymers) are presented. Optical and dc conductivity measurements reveal that the ruthenium and osmium polymers, when partially oxidized, are highly conductive…
Experimental evidence indicating immiscibility of the homopolymers poly(vinylidene fluoride) and poly(vinyl fluoride), both in the crystalline and amorphous phases, is presented. The X-ray analysis of the blended samples reveals patterns that are relatively insensitive to blend composition and that are similar to thos…
Abstract This paper discusses a mathematical model governing the galvanic corrosion phenomenon and surveys the research efforts which have been applied to find a solution to the above problem. The authors classify these techniques into three categories. The first is the finite difference method (FDM), the second is th…
Chinese hamster V79 multicell spheroids growing in tissue culture exhibit many of the same properties as solid tumors outgrowing their blood supply, including the spontaneous development of both noncycling and hypoxic cell populations expected to be resistant to many chemotherapeutic agents. Cell-sorting techniques we…
Interest in liquid crystalline side-chain polymers has grown tremendously in recent years because of their theoretical aspects and their potential applications. Over the past few years, a considerable research effort has been made in electro-optic display using nematic or smectic. A mesogenic side-chain polymers. On t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular weight distribution dependence of the viscoelastic properties of linear polymers: the coupling of reptation and tube-renewal effectsJ. P. Montfort, G. Marin, and P. MongeCite this: Macromolecules 1986, 19, 7, 1979–1988Publication Date (Print):July 1, 1986Publicatio…
Two new Lowicryl resins have been developed for embedding biological materials at temperatures down to 210 K (hydrophilic K11M) and to 190 K (hydrophobic HM23). They have similar properties to Lowicryl K4M and HM20. The new resins were first tested for low temperature applications by the 'progressive lowering of tempe…
Abstract Isotactic polypropylene has been shown to crystallize from the melt spherulitically at intermediate undercoolings (100–130°C) in the presence of a high amount (40 wt %) of chalk (calcium carbonate). Linear growth rate is not remarkably affected by the presence of a filler. Both nonisothermal and isothermal cr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBand electronic structure of the molybdenum blue bronze A0.30MoO3 (A = K, Rb)M. H. Whangbo and L. F. SchneemeyerCite this: Inorg. Chem. 1986, 25, 14, 2424–2429Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of metal complexes of triaza macrocycles with three pendant pyridylmethyl armsLise Christiansen, David N. Hendrickson, Hans Toftlund, Scott R. Wilson, and Chuan Liang XieCite this: Inorg. Chem. 1986, 25, 16, 2813–2818Publication Date (Print):July 1, 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBisphenol A polycarbonate/poly(iε-caprolactone) blends: melting point depression and reactivityJames M. Jonza and Roger S. PorterCite this: Macromolecules 1986, 19, 7, 1946–1951Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published iniss…
The structure of monoclinic ZrO 2 particles dispersed in MgO‐partially‐stabilized zirconia has been examined systematically using transmission electron microscopy and electron micro‐diffraction. In both particles transformed athermally and those transformed under stress, the product of the martensitic tetragonal to mo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in some novel .mu.-azido-bridged copper(II) dimers. Crystal structures of [L2Cu2(.mu.-N3)(N3)2](ClO4).cntdot.H2O, LCu(N3)2, [L2Cu2(.mu.-N3)2(ClO4)2], and L'Cu(N3)2 (L = N,N',N"-trimethyl-1,4,7-triazacyclononane and L' = 1,4,7-triazacyclononane)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new cryptophane forming unusually stable inclusion complexes with neutral guests in a lipophilic solventJosette. Canceill, Liliane. Lacombe, and Andre. ColletCite this: J. Am. Chem. Soc. 1986, 108, 14, 4230–4232Publication Date (Print):July 1, 1986Publication History Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElastic modulus of polyethylene in the crystal chain direction as measured by x-ray diffractionMasaru Matsuo and Chie SawatariCite this: Macromolecules 1986, 19, 7, 2036–2040Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue…
Tetragonal ( t ) ZrO 2 precipitates in Mg‐, Ca‐, and Y‐partially‐stabilized ZrO 2 (Mg‐PSZ, Ca‐PSZ, Y‐PSZ) have different habit planes and different morphologies. These differences arise because of differences in lattice parameters of precipitate and cubic ( c ) ZrO 2 matrix in the three systems. The approximate {001}…
For a detailed pheno- and genotypic characterization of the genus Thermus, the following seven representative strains were analyzed: Three extremely thermophilic strains (optimal temperature for growth, 65 to 75°C), Thermus aquaticus DSM 625, “Thermus flavus” DSM 674, and “Thermus thermophilus” DSM 579; and four moder…
Abstract Factors that could explain the lower tensile properties of nonpolar soft-segment-based polyurethane block copolymers relative to those of conventional polyether or polyester polyurethanes have been examined. Many of the materials studied in the literature have suffered from the use of soft segments with poor…