Materials Literature
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Fundamentals of spinning Melt spinning Solution spinning Spinning for nonwovens The spinning of highly aesthetic fibres Fibre spinning of anisotropic polymers Spinning of thermotropic liquid-crystal polymers Gel spinning processes Spinning of ultra-fine fibres Spinning of optical fibres.
A series of coprecipitated nickel(II)–cobalt(II) hydroxide nitrate samples with different cationic compositions has been studied by means of X-ray diffraction, infrared spectroscopy and thermal analysis. A continuous series of solid solutions NixCo2–x(OH)3NO3(0⩽x⩽2) is formed between the end members Ni2(OH)3NO3 and Co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolypyrrole film formation by solution-surface electropolymerization: influence of solvents and doped anionsSeungjun Lee, Hyunkyung Sung, Sujung Han, and Woonkie PaikCite this: J. Phys. Chem. 1994, 98, 4, 1250–1252Publication Date (Print):January 1, 1994Publication History P…
When polyethylene is subjected to high fields in the presence of water, a water tree may be formed. However, under dry conditions a 'deteriorated region' is gradually formed before the initiation of an electrical tree. The experimental results suggest some similarities in structure and properties between the deteriora…
The expression of distortion free energy derived in our earlier paper [Phys. Rev. A 45, 974 (1992)] is used to derive expressions for the 12 elastic constants of a biaxial nematic phase. These expressions are written in terms of order parameters characterizing the nature and amount of ordering in the phase and the str…
The amount of platinum introduced by ion exchange on TiO2 anatase (63 m2 g–1) can be increased by repeating the exchange procedure after reduction of the catalyst under hydrogen. From IR spectroscopy studies, two kinds of Lewis acid sites on the TiO2 support (α and β sites) have been found to participate in the ion-ex…
We have used Raman scattering to investigate the effects of intense laser pulses on the structure of resolidified graphite. Graphite was irradiated with 0.325--3.25-J/${\mathrm{cm}}^{2}$, 620-nm, 90-fs single-laser pulses causing it to melt and rapidly resolidify. Raman studies of the resolidified carbon in the crater…
M. C. Grossel and S. C. Weston, Contemp. Org. Synth., 1994, 1, 367 DOI: 10.1039/CO9940100367
Diatom aggregates composed of one to many chains of Pseudonitzschia pseudodelicatis-sima were abundant (up to 10% of the autotrophic biomass) in high-nutrient open-ocean regions of both the equatorial Pacific and north Atlantic. The chains were connected at a central mass composed of fecal material. The morphology is…
An empirical potential-energy function comprising two- and three-body terms, whose parameters have been determined from the properties of diamond and graphite, is used to study the structures and energies of carbon microclusters.The binding energy per atom of smaller linear clusters increases monotonically with the nu…
Magnetotransport has been studied on the quasi-two-dimensional monophosphate tungsten bronzes (PO 2 ) 4 (WO 3 ) 2 m for m = 4, 6 and 7. These series provide a model system where the low-dimensional character and the electron density can be changed with m . In P 4 W 8 O 32 ( m = 4) and P 4 W 12 O 44 ( m = 6), both Hall…
The first structurally characterized linear hexapyrrin is prepared with the solid state structure of the dihydrochloric acid salt showing it to lie in a nearly planar S-shaped conformation.
Heterojunction Ge<sub><i>x</i></sub>Si<sub>1-<i>x</i></sub>/Si internal-photoemission infrared detectors are being developed for multispectral imaging in the middle-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) spectral bands. The detectors, which are fabricated by molecular beam epitaxy of degenerate…
Article Crystal structure of bismuth nonathallium hexatelluride, BiTl9Te6 was published on January 1, 1994 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 209, issue 1).
The crystal structure of magnetoelectric KNiPO4 was refined by single crystal X-ray diffraction methods at room temperature confirming orthorhombic space group Pna21. Powder neutron diffraction investigations showed that the room temperature structure is preserved down to 30 K. Consistent with magnetic susceptibility…
Effects of hydrogen on the deformation behavior and the structure of deformation bands under monotonic loading of Inconel 718 were investigated. Hydrogen significantly reduced tensile elongation of the material and susceptibility to hydrogen embrittlement was not influenced by the aging condition. In the hydrogen-free…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Michael J. Nagy, Richard J. Buist; Effect of heat sink design on thermoelectric cooling performan…
Pressureless sintering of the SiC-AlN system with Y2O3 as a sintering aid was carried out. Composites with<50vol% SiC were densified to above 98% of the theoretical density in N2 atmosphere of 0.1MPa at temperatures below 1900°C using commercial SiC and AlN powders. The densification behavior was investigated and anal…
Results of inspection creep damage by magnetic hysteresis measurements on Cr-Mo steel are presented. It is shown that structure sensitive parameters such as coercivity, remanence and hysteresis loss are sensitive to the creep damage. Previous metallographic studies have shown that creep changes the microstructure of t…
The reaction of pyrrole and thiophene monomers with copper- or nickel-exchanged mordenite has been investigated using X-ray photoelectron (XPS) and photoacoustic infrared (PAIRS) spectroscopies. Because of the differing oxidising powers of the cations studied, polymerisation occurred only with copper-exchanged mordeni…