Materials Literature
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Polymer-solvent interaction parameters for the blends of natural rubber (NR) with styrene-butadiene rubber (SBR) and polybutadiene rubber (BR) are calculated using the Flory-Rehner equation by equating the network density of the vulcanizates in two solvents.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal oxidation kinetics from the viewpoint of a physicist: the microscopic motion of charged defects through oxidesAlbert T. Fromhold Jr.Cite this: Langmuir 1987, 3, 6, 886–896Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe nature of simple monovalent cation-silica interaction as reflected in the spin-lattice relaxation time of sodium-23Hyun M. Jang and Douglas W. FuerstenauCite this: Langmuir 1987, 3, 6, 1114–1118Publication Date (Print):November 1, 1987Publication History Published online…
The magnetoquantum oscillations in ${\mathrm{NbSe}}_{3}$ show frequency shifts and beat structures due to interaction between the pinned charge-density-wave (CDW) configuration and the normal Fermi surface (FS). Spatial variations in the phase deformation of the CDW pinned at impurities can result in changes in the lo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical approach to corrosion resistivity of alloysMasahiro Seo and Norio SatoCite this: Langmuir 1987, 3, 6, 917–921Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://pubs.acs.org/doi/10.1021/l…
The energy loss for protons on Al, Cu, and Ag thin foils around the maximum of the stopping have been measured at two different exit angles. The bombardment energy ${E}_{\mathrm{max}}$ where such a maximum occurs is found to depend on the angle of observation, ${E}_{\mathrm{max}}$ being greater when the detector is po…
The reflection and transmission of thin-film guided waves incident at variable angles upon a variety of transverse discontinuities are analyzed. A thin film bounded by semi-infinite media is modeled by a thin film bounded by finite media, terminated at shorting planes situated parallel to and a long distance from the…
Five (2,2-dimethylchroman-6-yl)alkanoic acids were synthesized and tested for antigelling activities. It was envisioned that these agents might bind via hydrophobic bonding to nonpolar sites of the "donor-acceptor" regions of hemoglobin S. Several (2,2-dimethylchroman-6-yl)alkanoic acids containing 1-4 carbon atoms on…
Abstract Deeply weathered soils forming on andesitic mudflows are common in the foothills of the Sierra Nevada of California. Many of these soils (Humults) have oxidic mineralogy based on extractable Fe and gibbsite detected by x‐ray diffraction and differential thermal analysis. Thermal analysis and differential ther…
Forces required by complete dentures for penetrating some commonly used food items were measured experimentally. These forces were compared with the maximal bite forces of twenty-seven complete denture wearers. Food items that required the greatest forces in direct closure were rye bread (167 N), raw carrot (118 N), b…
In order to obtain accurate film thickness measurements using various spectroscopic reflection techniques, it is necessary to have accurate refractive index measurements over the spectral range. A simplified representation of the dispersion of many of the films and materials used in the manufacture of semiconductor de…
Abstract The ordered phase of Tris(hydroxymethyl)aminomethane can be described in terms of molecular layers with intermediate intralayer and weak interlayer hydrogen bonds. The results of a normal coordinate treatment prove the strong coupling of the OH and NH deformation modes with other internal vibrations. Except f…
The combined effect of water and oxygen on stress corrosion cracking (SCC) of carbon-manganese steel in liquid and vaporous ammonia has been studied in detail. The highest susceptibility to SCC was found in liquid ammonia with 3 to 10 ppm oxygen and a water content lower than 100 ppm. SCC can occur in ammonia with an…
The past 15 years have seen major advances in the development of ceramic tool materials to give high cutting speeds and long tool lifetimes. These developments require rigid machine tools and high-power motors, and a change in the way the tool tips are used. The main areas of application of these new tool materials ar…
A homologous series of methacrylate side-chain liquid crystalline (LC) homopolymers and copolymers was studied in solution by several techniques. The molecular weight distributions and some hydrodynamic and thermodynamic parameters were calculated. A decrease in the dn/dc values of the copolymers compared to those of…
By 205 Tl and 207 Pb NM R the chemical shift in polycrystalline samples of binary halides AX, BX 2 and ternary halides ABX 3 (A = Cs, Tl; B = Pb; X = Br, I) was studied at room temperature. The chemical shift tensors δ ( 205 Tl) and δ ( 207 Pb) were determined in magnitude and orientation on single crystals of the ort…
A two layer model for water flux through the artery is studied using a mathematical model based on the theory for the consolidation of water saturated soils. The matrix is considered to be constituted by two layers with different permeabilities and different elastic constants and the two systems of equations are coupl…
A recently proposed model for interstellar grains (Duley, Jones & Williams) in which the extinction arises from small (radius, a≲ 100 Å) silicate cores with mantles (30–50 Å thick) of hydrogenated amorphous carbon (HAC or α-C:H), and large, but thinly coated, silicate grains (a∼0.05−0.25 μm) can successfully explain m…
Silicon carbide test bars were made by a simple wet‐processing technique. The pressure casting method used the same equipment as conventional dry‐pressing, but with a modified die. This casting technique was employed in order to produce test bars with improved strength and smaller fracture flaws than produced by dry‐p…
An electrochemically formed polyazulene(PAz), one of the electroconductive polycyclic hydrocarbons, was studied for its electrochemical properties in order to examine the possibility of utilizing it as a cathode active material of rechargeable lithium battery. The electrode kinetics of PAz film electrode, especially t…