Materials Literature
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This paper reports the results from the condition assessment of 12- and 24-kV cross-linked polyethylene (XPLE) cables using a technique based on dielectric spectroscopy initially developed at KTH in Sweden. The work aims to examine whether the method could detect water tree degradation for the second generation medium…
Abstract The copper‐containing hydrotalcites (Cu‐HTLcs) are synthesized under microwave irradiation, the effect of rare earth elements (RE) on the synthesis of Cu‐HTLcs, wherein RE stands for rare earth elements, e.g., La, Y, Sm and Ce, is also investigated in the present work. The hydrotalcite structure of the synthe…
Taking advantage of both the self-organizing characteristics and the amphiphilic property of poly(styrene-block-ethyleneoxide) (P(S-b-EO)), we have realized one-step fabrication of nanoelectrode ensembles (NEEs). By choosing the electrolyte solution elaborately, only the poly(ethylene oxide) (PEO) segment in the P(S-b…
Cu nanowires were electrodeposited into the nanopores of self-ordered aluminum oxide films. CuO and Cu2O nanowires were fabricated by oxidizing Cu nanowires in air. Cu nanowires oxidized at 250°C transform only to Cu2O (grain size ∼21nm), they transform to a mixture of CuO and Cu2O above 350°C and finally to CuO with…
Abstract To increase our knowledge of the ultrastructure within softwood fibres, enzymatic treatment, thermoporosimetry, light microscopy, and atomic force microscopy with image analysis were used to investigate the structure of holocellulose softwood pulp fibres. The size of the average cellulose fibril aggregates an…
Rubber-toughened nanocomposites (RTNC) consisting of ternary blends of polyamide 6 (PA6), polypropylene (PP) and polyethylene-octene elastomer (POE) containing 4 wt% of organophilic modified montmorillonite were produced by melt compounding followed by injection moulding. The blend composition was kept constant (PA6/P…
The transport of granular material often generates severe damage. Understanding the correlation between the friction coefficient, particle geometry and wear mechanisms is of primary importance for materials undergoing abrasive wear. The aim of this study is to investigate the effect of particle geometry on wear mechan…
Multiwalled carbon nanotubes (MWNTs) are chemically modified with respect to various different oxidative conditions, including the acid concentration, treatment time, and temperature. The conductivity of polyurethane (PU) composites filled with the MWNTs oxidized under optimal condition is measured as a function of fr…
We describe a unique silk protein secreted from the cylindrical silk glands of the spider Nephila clavata. This silk is primarily composed of three proteins, whose transcripts of approximately 16.0, 14.5 and 13.0 kb are homologous to one another in two termini and repetitive units, as determined on Northern blotting.…
O uso de fibras naturais como reforçadores para termoplásticos tem despertado interesse crescente, principalmente para termoplásticos reciclados, devido ao baixo custo, utilização de recursos naturais brasileiros disponíveis, além de contribuir para a despoluição ambiental. No presente trabalho foram avaliadas as prop…
The effect of surface treatments on the surface characteristics of aluminium alloy 2024-T3 before the appearance of filiform corrosion (FFC) is investigated. The nature of the surface prior to coating and initiation of FFC, with particular respect to the intermetallics is investigated in this work. The SKPFM (Scanning…
Abstract Thin films of indium tin oxide (ITO) doped with zinc oxide have the remarkable properties of being conductive yet still highly transparent in the visible and near‐IR spectral ranges. The Electron beam deposi‐ tion technique is one of the simplest and least expensive ways of preparing. High‐quality ITO thin fi…
Bulk ZnO crystals were implanted using 100keV H+ ions with doses 5×1016 and 2×1017cm−2 and subsequently annealed at 200–600°C to study the evolution of the implanted H by employing secondary ion mass spectrometry and scanning spreading resistance microscopy. It is shown that the heat treatment results in a decrease of…
We have identified Bombyx mori transformer-2 gene (Bmtra-2) cDNA by blasting the EST database of B. mori. It was expressed in the whole life of the male and female silkworm and was observed as a band of 1.3 kb by Northern blot analysis. By comparing corresponding ESTs to the Bmtra-2 DNA sequence, it was revealed that…
K. Konga & S. J. Eichhorna* a Materials Science Centre, School of Materials , University of Manchester , Manchester, UK * Materials Science Centre, School of Materials, University of Manchester, Grosvenor Street, Manchester, M1 7HS, UK E-mail: s.j.eichhorn@manchester.ac.uk The influence of the intramolecular hydrogen…
The effects of cross-linked poloxamine hydrogels on the cellular function of embedded HepG2 cells and surface-attached endothelial cells were assessed. HepG2 cells embedded within collagen/poloxamine-methacrylate gel survived photo-cross-linking (MTT viability, 78%). There was a gradual increase in cell number during…
From literature data and a preliminary calorimetric study it is clear that the Vilsmeier−Haack reaction poses specific thermal hazards as both the Vilsmeier−Haack intermediate ( 1 ) in N,N- dimethylformamide ( 2 ) and the reaction mixture with N,N -dimethylaniline ( 3 ) are thermally unstable and can generate high and…
<div class="htmlview paragraph">A Diesel Particulate Filter (DPF) is needed to meet the Particulate Matter (PM) requirements of US EPA 2007 regulations for diesel engines. A catalyzed diesel particulate filter (cDPF or CSF) in combination with a diesel oxidation catalyst (DOC) is effective if the DOC has achieve…
This article presents the investigations on the cell morphology, surface roughness, impact properties, and odor concentration of microcellular wood fiber reinforced PP composites in injection molding process with different chemical foaming agents. The chemical foaming agent and wood fiber content strongly affect the m…
Silver impregnated activated carbon (SIAC) can effectively remove iodide from water and sequester it in the form of AgI(s)). Given the extremely insoluble nature of AgI(s), the spent SIAC can be safely disposed of in land burial facilities. However, when the molar ratio of silver to iodide is greater than one, which i…