Materials Literature
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Abstract The surface of precipitated silica was modified by heat treatment (800°C, 4 h) and hexadecanol treatment. Diffuse reflectance infrared Fourier transform spectroscopic (DRIFTS) measurements reveal that the modification of the silica surface reduces the silanol content. Heat treatment causes condensation of the…
Abstract Results of computer simulations of polymer layers consisting of chains grafted by one end on an unpenetrable plane are presented. Characteristics of translational and rotational motion of different chain segments and correlation functions of chain radii were calculated both for single layers at different graf…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTetranuclear, Hexanuclear, and Octanuclear Copper(II) Complexes of a Series of Novel Dendritic Poly(phthalazine) LigandsYisheng Zhang, Laurence K. Thompson, John N. Bridson, and Monica BubenikCite this: Inorg. Chem. 1995, 34, 23, 5870–5877Publication Date (Print):November 1,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUltrafine Metal Particles in Polymers and the Formation of Periodic Polymer StripesM. Samy El-Shall and Wyatt SlackCite this: Macromolecules 1995, 28, 24, 8456–8458Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 Nove…
This study is primarily concerned with the performance of double-braided ropes. widely used in marine applications. The mechanical properties of such ropes are ob tained by combining their structural features and the constitutive behavior of individual rope components. Emphasis in this study is on the tensile behavior…
Techniques for the assessment of skin hydration are often based on the electrical properties of the stratum corneum. A commonly used instrument for measurements of skin moisture is the corneometer, which detects changes in the dielectric constant of the material in contact with the probe. It has been suggested that di…
InGaMgO 4 and InGaZnO 4 crystals with the YbFe 2 O 4 layered structure have been found to be transparent conductive oxides. The band gaps of these crystals were wider than that of In 2 O 3 . Conductivity was induced by doping with electrons through introduction of oxygen vacancies. Mobility, carrier density and conduc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Characterization of Polymer-Dispersed Liquid Crystals by Differential Scanning CalorimetryGraham M. Russell, Brian J. A. Paterson, Corrie T. Imrie, and S. Karl HeeksCite this: Chem. Mater. 1995, 7, 11, 2185–2189Publication Date (Print):November 1, 1995Publication His…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTShear-Induced Concentration Fluctuations in Ultrahigh Molecular Weight Polyethylene Solutions. 1. Observation above the Melting PointHiroki Murase, Takuji Kume, Takeji Hashimoto, Yasuo Ohta, and Tohru MizukamiCite this: Macromolecules 1995, 28, 23, 7724–7729Publication Date…
The observation that Young's law for the contact angle of a liquid droplet on a substrate should continue to hold when the droplet is deformed by gravity is to some extent counter-intuitive, which has led to doubts and controversy in the literature. We show, in agreement with others, that Young's law holds in the pres…
Abstract 1,4:3,6‐Dianhydrosorbitol (DAS) seems to be an interesting reagent for the synthesis of polyurethanes. In the present work, the kinetics of the reaction of DAS with a monoisocyanate ( p ‐tolyl isocyanate, p ‐TI) and with a diisocyanate (4,4′‐diphenylmethane diisocyanate, MDI) were studied with the help of a c…
Abstract Die beschriebenen Trisalkoxy‐polyoxovanadate mit verzerrter Lindqvist‐Struktur, in der sechs der zwölf μ 2 ‐verbrückenden Sauerstoffatome formal durch die Sauerstoffatome von zwei koordinierten Pentaerythritolliganden ((HOCH 2 ) 3 CCH 2 OH) ersetzt wurden, können auf einfache Weise im wäßrigen Medium dargeste…
Numerical and asymptotic results are presented for a coupled PDE system that models recent experiments of the self-focussing of laser light in a nematic liquid crystal. This study complements previous asymptotic analyses which, in a narrow-beam limit, describe two essential features observed in nematic self-focussing…
Abstract Fe(ClO 4 ) 2 reacts with the segmental ligand 2‐{6‐[1‐(3,5‐dimethoxybenzyl)‐1 H ‐benzimidazol‐2‐yl]pyridin‐2‐yl}‐1,1′‐dimethyl‐5,5′‐methylene‐2′‐(5‐methylpyridin‐2‐yl)bis[1 H ‐benzimidazole] ( L 2 ) in MeCN to give the diamagnetic deep violet complex [Fe( L 2 ) 2 ] 2+ where the metal is pseudo‐octahedrally co…
Power conversion efficiency (PCE) measurements were carried on a thermogalvanic cell containing the ferricyanide/ ferrocyanide couple in an aqueous background electrolyte of and using two planar platinum electrodes. The PCE was found to be 0.031% which is ca. 0.50% of the Carnot maximum for the two electrode temperatu…
This paper describes refinements to an instrument for determining the viscoelastic properties of a solid material isothermally, with a single apparatus, over 10 decades of time and frequency. Torque is applied electromagnetically to a specimen fixed at one end. Specimen deformation is determined via a laser beam refle…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNOx Abatement with Carbon Adsorbents and Microwave EnergyYougen Kong and Chang Yul ChaCite this: Energy Fuels 1995, 9, 6, 971–975Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of .alpha.,.omega.-Diisopropenyloligopropylene by Thermal Degradation of Isotactic PolypropyleneTakashi Sawaguchi, Tadashi Ikemura, and Manabu SenoCite this: Macromolecules 1995, 28, 24, 7973–7978Publication Date (Print):November 1, 1995Publication History Publis…
An experimental procedure is presented which allows the analysis of the angular dependence of the coercivity of polycrystalline samples ${\mathit{H}}_{\mathit{c}}$(\ensuremath{\theta}) in terms of the angular dependence of the switching field of the individual grains forming the material, ${\mathit{H}}_{\mathit{s}}$(\…
Abstract The 1-ethyl-2, 6-dimethyl-4(1 H )-pyridinone, trihydrate C 9 H 13 NO · 3H 2 O (EDMP) is a potential nonlinear optical crystalline material for second harmonic generation till the near ultraviolet region, crystallizing in the monoclinic space group Cc with Z = 4 and the unit cell parameters a = 8.382(1) Å, b =…