Materials Literature
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Aimed at improving the maximum available power density in a planar-type solid oxide fuel cell, an analytical model is proposed in this work to find the optimum size of a current collector that collects the current from a specific active area of the electrode-electrolyte layer. Distributed three-dimensional current col…
Abstract Quasi‐static and dynamic compressive properties of three soybean oil‐based polymeric materials, which were made through the reaction of epoxidized soybean oil with diamine compounds, have been determined. Quasi‐static properties were determined with an MTS 810 hydraulically driven testing machine, whereas dyn…
Hydrolysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 638 Condensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 643 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 643 A br…
Udgivelsesdato: JAN
Abstract Summary: Selective poisoning has been studied as a means of improving the morphology and rheological properties of high‐impact poly(propylene) copolymer particles. Two different methods of poisoning the catalyst surface in order to avoid the accumulation of ethylene‐propylene rubber (EPR) without influencing…
Abstract Summary: We analyzed quantitatively the effects of temperature on the morphologic evolution of the desorption process in hot water measured ex situ by atomic force microscopy. The morphology of the hole that forms with immersion of the polyelectrolyte film in hot water has characteristics similar to those fro…
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…