Materials Literature
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Spatially resolved electron energy‐loss spectroscopy (EELS) analysis revealed a dynamic evolution of grain‐boundary (GB) films in a liquid phase (Al 2 O 3 –Y 2 O 3 –CaO) sintered β‐SiC, which had been deformed both in tension and in compression. An effective chemical width was measured from the oxygen segregation to G…
Seidite-(Ce), Na 4 (Ce,Sr) 2 {Ti(OH) 2 (Si 8 O 1 8 )}(O,OH,F) 4 5H 2 O, is a titanosilicate recently discovered in the Yubileynaya pegmatite at Mount Karnasurt, Lovozero alkaline massif, Kola Peninsula, Russia. Grains consist of disordered [010] fibers; no single crystals suitable for X-ray diffraction have found. On…
The paper discusses the results of steam explosion experiments of TROI-13, TROI-14, and TROI-15, which were performed under the research program named “Test for Real cOrium Interaction with water (TROI).” TROI-13 and TROI-14 used corium, which is a mixture of UO2 and ZrO2 at a 70:30wt%, while TROI-15 used ZrO2. These…
Abstract Diphenolic Acid, DPA [bis(4‐hydroxyphenyl)pentanoic acid] can be made from cellulose‐rich waste. The t‐butyl ester was converted to homo‐ and copolycar‐ bonates (with bis‐phenol‐A, BPA). Deblocking the ester yielded polycarbonates with pendent carboxyl groups that exhibit all the properties of polyelectrolyte…
High-density dispersion fuel experiment, RERTR-4, was removed from the Advanced Test Reactor (ATR) after reaching a peak U-235 burnup of {approx}80% and is presently undergoing postirradiation examination at the ANL Alpha-Gamma Hot Cell Facility. This test consists of 32 mini fuel plates of which 27 were fabricated wi…
A selection of cotton samples is tested with the Suter-Webb Array, AFIS (advanced fiber information system), and HVI (high volume instrument) methods. Short fiber contents as measured by these different methods show significant differences and high variations. The calibration level is one of the major factors causing…
This paper discusses how the composition and heat treatment affect the properties of the transparent ceramic Gd2O2S:Tb (Ce). The excitation spectra and the spectral composition of the emission and its temperature dependence have been studied, along with the thermally stimulated luminescence and the afterglow kinetics.…
Peirce's model is newly studied to predict the structural and mechanical properties of woven fabrics. The study concerns various fabric structures made from different yarns of cotton, wool, and polyester, and weave structures of plain, twill, satin, and mat. Weave structures and fabric relaxation cause changes in the…
Abstract SiC‐based fibres are complex systems of nanophases. Raman imaging of polished Tyranno SA3 fibre (UBE Industry) sections indicated that carbon species have different concentrations, natures and short‐range order on the fibre core and surface, which results from the production process. The monitoring of the fib…
The effect of the concentration of zinc hydroxy-stannate and zinc borate on the fire performance of rigid PVC formulations has been investigated. Fire testing was carried out using cone calorimetry as well as the limiting oxygen index (LOI) test. In addition, further testing was done to check that incorporation of the…
Dense Ti3SiC2 bulk ceramic was synthesised by hot pressing of elemental titanium, silicon, and carbon powders. The effects of starting composition of the powders on the synthesis of pure Ti3SiC2 were examined. Phase identification was carried out by X-ray diffraction. Silicon content in the starting composition played…
The article is a concise analysis of the author's group's systematic exploration of the scope and potential of a new general approach to the synthesis of sulfur-rich polyconjugated polymers by direct dehydrogenative sulfurization of common polymers (polyethylene, polyacetylene, polystyrene, polyvinylpyridine, polydiet…
A detailed experimental/theoretical study is conducted to explore the fundamental nature of individual cotton fibers via light-scattering experiments. For this purpose, a new precision nephelometer is built and calibrated with quartz fibers. In the experiments, iris opening (viewing angle) and scanning range and rate…
Thermoluminescence (TL) in various Cu+-doped materials is studied. A good correlation between the presence of copper in the Cu+ form and TL sensitivity is observed. Correlation between TL emission spectra and photoluminescence suggests that Cu+ acts as the emission center in the TL process. (© 2003 WILEY-VCH Verlag Gm…
Abstract An alloy of Cu–9at.%Al(111) has been oxidized in a low‐energy electron diffraction (LEED)/AES and a scanning AES instrument at elevated temperatures. Dosing with 1300 L of oxygen at 995 K gives rise to well‐ordered oxide layer formation on the Cu–9at.%Al alloy. The structure of the ordered oxide confirmed by…
In magnetically controlled shape memory (MSM) materials deformation can be controlled by magnetic field. It is shown that the magnetic field induced strain is directly connected with the twinning stress, i.e. mechanical stress needed to transform the sample to single variant state. In cases where the magnetically-indu…
Abstract Chitosan was partially N ‐acylated by treatment with n ‐fatty acid anhydrides in a homogeneous solution in 2 vol.‐% aqueous acetic acid‐methanol (1:2 v/v). The degree of substitution (d.s.) for N ‐acyl groups in the water‐soluble N ‐acylchitosan derivatives was in the range of 0.42–0.82 for N ‐acetyl, 0.37–0.…
A novel Polyacrylamide superparamagnetic iron oxide nanoparticle platform is described which has been synthetically prepared such that multiple crystals of iron oxide are encapsulated within a single Polyacrylamide matrix ( Poly Acrylamide Magnetic [PAM] nanoparticles). This formulation provides for an extremely large…
Imazalil and ethylenediamine-tetraacetic acid (EDTA) were incorporated into low-density polyethylene (LDPE) aimed at producing antimicrobial packaging films for foodstuffs. Moulded plates (thickness 2mm) containing 5% of EDTA inhibited Bacillus subtilis, whereas 0.05–0.25% of imazalil had strong activity against Asper…
Abstract The aim of this work is to study the structure‐properties relationship of rigid and plasticized PVC/PMMA blends. For that purpose, blends of variable compositions were prepared in the absence and in the presence of a plasticizer di (ethyl‐2 hexyl) phtalate or DEHP. The miscibility of the two polymers was inve…