Materials Literature
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A commercial modified glyoxal-based resin product is used for the chemical end-finish of linen and ramie fabrics in wet fixation with standard curing time. The finishing technology recommended by the manufacturer significantly spoils the tensile and tearing properties, and decreases the resilience of the fabrics, and…
Abstract Cobalt tetraarylporphyrins 1 ‐ Co and 2‐Co with thioacetate‐functionalized carbon chains on the aryl groups were synthesized. The cobalt porphyrin 2‐Co was immobilized on a gold surface after deprotection of the S ‐acetyl group. The immobilized porphyrin was studied by X‐ray Photoelectron Spectroscopy (XPS) a…
A texture was introduced into an Sm‐α‐sialon ceramic by hot pressing, such that the c ‐axis was preferentially oriented normal to the pressing direction. The material was then uniaxially hot forged for up to 60 min, with the forging direction normal to the hot‐pressing direction. The texture initially reduced to a one…
Abstract Summary: In the present communication we describe a photolithographic method to produce polyaniline (PANI) patterns using PANI modified with a traceless removable functional group (nitrosated polyaniline, PANI‐NO) and external inexpensive polymeric photoacid generators (poly(vinyl chloride), PVC). Therefore,…
Abstract Novel amphiphilic biodegradable graft copolymer based on poly(aspartic acid) was prepared by attaching monomethoxy polyethylene glycol (mPEG) as hydrophiphic segment to poly(aspartic acid‐ g ‐octadecylamine) (PASP‐ g ‐ODA) as hydrophobic backbone. The chemical structures of amphiphilic copolymers were confirm…
Boron nitride nanohorns (BNNHs) were synthesized in a large-scale. Detailed transmission electron microscopy investigations reveal that a BNNH consists of boron nitride cone-shaped nanostructures (BNCNSs) with different disclination angles. Systematic studies of electronic structure of a BNCNS with different disclinat…
Scanning transmission electron microscopy and electron energy loss spectroscopy have been applied to investigate the possible structural origins of ferroelectric polarization degradation at PbTiO3∕Pt interfaces. The microscopic analysis revealed that an amorphous Ti-rich interfacial layer as well as nanometer size pre…
Origins of Colloid Stability . . . . . . . . . . . . . . . . . . . 249 Electrostatic Repulsion . . . . . . . . . . . . . . . . . . . . 249 van der Waals Attraction . . . . . . . . . . . . . . . . . . . 249 Steric Stabilization and “Anomalous” Stability . 250 Hydration Effects . . . . . . . . . . . . . . . . . . . . .…
Synthese mit Licht: CdS-Nanopartikel (Quantenpunkte, QDs) erzeugen in wässriger Lösung durch UV-Bestrahlung Superoxid- und Hydroxylradikale. Die Radikale aktivieren P450BSβ-Enzyme auf der Oberfläche der QDs, die dann Myristinsäure katalytisch zu α- und β-Hydroxymyristinsäure umsetzen (siehe Abbildung; R=H3C(CH2)10). H…
Abstract Graft copolymerization of acrylamide (AAm) and ethyl acrylate (EA) onto cellulose has been carried out from their binary mixtures using ceric ammonium nitrate (CAN) as an initiator in the presence of nitric acid at 25 ± 1 °C. The extent of acrylamide grafting increased in the presence of the EA comonomer. The…
The structural relaxation times of silica glass, both bulk glass and fiber glass at various fictive temperatures, were estimated at selected temperatures. The structural relaxation time of a glass is needed to estimate the rate of change of various glass properties in the glass transition temperature range. Traditiona…
Measurements and calculations of the contribution of the non-dipole terms in the angular distribution of photoelectrons from the K-shell of randomly oriented N 2 molecules are reported. The angular distributions have been measured in the plane containing the photon polarization and the photon momentum vectors of linea…
The properties and applications of edible films and coatings (EFC) have been studied extensively during the past few decades. It has been demonstrated that EFC can extend shelf life and maintain quality of various food products.
One important issue for integrating atomic-layer-deposited (ALD) TaN barrier metal into Cu interconnects is a low thickness margin due to high electrical resistivity (∼50mΩcm) of ALD-TaN. In investigating this issue, the median via resistance (0.16μmdiametervias) was found to increase from 0.5 to 26Ω∕via as the ALD-Ta…
Thermodynamic and kinetic analyses as well as extensive experimentation were used to better understand the laser chemical vapor deposition of silicon carbide (SiC). The thermodynamic calculations suggested the use of lower processing temperatures, which experimentally proved advantageous for growth of uniform SiC fibe…
In this paper, we report some numerical analysis results obtained in the study of the thermoelectric power (TEP) of 2D two phase materials. Based on the numerical resolution of transport equations, we compute the TEP of different composite structures. These were numerically simulated using a grain growth model. We sho…
Abstract Cationic polyurethane‐fluorinated acrylate hybrid dispersions (PUFA) were prepared by the copolymerization of styrene, butyl acrylate, and 2,2,3,4,4,4‐hexafluorobutyl methacrylate in the medium of crosslinked polyurethane via phase inversion polymerization. The said polyurethane was synthesized in acetone fro…
Upper Devonian rocks of the Iberian Pyrite Belt (IPB) in southwest Spain, comprising the Phyllite-Quartzite Group (PQ) and the lower part of the overlying Volcano-Sedimentary Complex (VSC), contain a diversity of terrestrial and marine palynomorphs (miospores and organic-walled microphytoplankton, respectively), which…
Abstract Both uncompatibilized and compatibilized blends based on polyamide 12 (PA12) and isotactic polypropylene (PP) were prepared in a Brabender Plastograph®. The compatibiliser used was maleic anhydride functionalized polypropylene (PP‐g‐MA). Phase morphology of the blends was inspected in scanning electron micros…
Dense tubular self‐supporting La 0.7 Ca 0.3 Fe 0.85 Co 0.15 O 3−δ perovskite membranes were prepared by thermoplastic extrusion. The rheological behavior of the ceramic mixture was studied. Non‐deformed tubes of 10 and 5 mm diameter and 0.3–0.8 mm wall thickness could be extruded. After sintering at 1100°C, the membra…