Materials Literature
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Schöner Anblick: Hochauflösungs-TEM kann genutzt werden, um die Oberflächenstruktur eines Metalloxid-Katalysators im Realraum zu bestimmen. Das Bild zeigt HR-TEM-Aufnahmen eines einzelnen Katalysatorpartikels entlang 〈001〉-Richtung weit entfernt vom Scherzer-Fokus. Der Partikelumfang wird durch die frakturierten Struk…
Abstract A hyperbranched polyamine was prepared using an A 2 + B 3 approach. It acted as a hyperbranched charring and foaming agent (HCFA) in combination with ammonium polyphosphate (APP) to form a new intumescent flame retardant (IFR) system for polyamide 6 (PA6). Effect of HCFA on flame retardant and thermal degrada…
First-principles calculations are performed to study the interaction of gold nanocluster Au(55) with small molecules CO and O(2). We find that the adsorption energy of CO on Au(55) is among 0.5-0.7 eV at different sites and [CO+O(2)] can be coadsorbed on Au(55). Comparisons between Au(55) and Au(32) show that the adso…
Well-defined intersectional CdS nanocrystalline thin films with a conifer-like morphology were synthesized by a facile electrochemical process. The morphology, structure, and phase composition of CdS nanostructures were examined by X-ray diffraction, field emission scanning electron microscopy, atomic force microscopy…
The step-by-step buildup of organic films through physical or covalent bonds is usually performed by the alternating adsorption of two types of polymeric chains. Overcompensation of the interacting groups after each deposition step (e.g., charge overcompensation in the case of polyelectrolyte multilayers) allows the b…
Abstract Poly(ether‐block‐amide) (PEBA) were prepared by means of a condensation reaction with polyamide‐6 as hard segment and polyether as soft segment. The optimal reaction conditions were determined as the followings: 3% of water and 0.35% of catalyst, reaction temperature 260°C ± 5°C and the reaction time 4 h unde…
The effect of hydrazine on the photophysical and morphological properties of water-soluble thioglycolic acid-capped cadmium telluride (CdTe) nanoparticles at room temperature has been investigated. At lower concentrations of hydrazine (0.5 M), a large enhancement in the luminescence of CdTe nanoparticles was observed…
The end sites of graphitic planes and their catalytic, chemical, physical, and electrochemical roles have been a longstanding issue in the surface chemistry of carbon science. In this study, complete exposure of the active edge sites on the outer surface of catalytically grown cup-stacked carbon nanotubes is accomplis…
Dendritic core-shell architectures which are based on hyperbranched polyglycerol for the solubilization of hydrophobic drugs have been synthesized and characterized. The core of hyperbranched polyglycerol has been modified with hydrophobic biphenyl groups or perfluorinated chains to increase the core hydrophobicity of…
Three-dimensional biocompatible and biodegradable scaffolds play important roles in tissue engineering. In this study, fibrous mats composed of electrospun poly(epsilon-caprolactone) (PCL)/small intestine submucosa (SIS) tubes were fabricated with a high degree of longitudinal alignment as a conduit for peripheral ner…
Abstract Zirconia/polydopamine (ZrO 2 /PDA) nanocomposite multilayer films were constructed on Si substrate via a novel nonelectrostatic layer‐by‐layer (NELBL) assembly technique. The building block of this technique is the newly reported dopamine molecule, which can be attached to almost all material surfaces and und…
Oil palm trunk (OPT), oil palm frond (OPF), and okara are agrowastes generated abundantly by the palm oil and soy industries. There are vast potentials for these fibrous biomass rather than disposal at landfills or incineration. Fibrous materials (FM) and alkali-treated fibrous residues (FR) were produced from the sel…
Abstract Well‐defined water‐soluble fluorinated polymer nanoparticles (PNPs) with a high fluorine content and biocompatibility were successfully prepared by living radical polymerization (LRP) of 2,2,3,3‐tetrafluoropropyl methacrylate (TFPMA) from the polyamidoamine dendrimer macroinitiator (PAMAM‐Br), and successive…
Silk fibroin, one of the most promising natural materials for tissue engineering, has positive interactions with the biological environment, particularly in the field of bone and cartilage regeneration. A new approach was developed to create hydrogels from water-based fibroin solutions by applying an electric field to…
Abstract The acetylation of cellulose in ionic liquids (ILs) and the subsequent dry/wet spinning of these processing solutions were investigated. The homogeneous acetylation in ILs was carried out using different molar ratios of acetic anhydride to the anhydroglucose unit (AGU). The obtained solutions of cellulose ace…
Flächenwirkung: Die planaren Oligofurane (unten im Bild; grau C, weiß H, rot O) sind, obwohl sie keine Alkylketten tragen, relativ gut löslich, zudem noch ungewöhnlich fluoreszierend und relativ stabil. Dank dieser Eigenschaften dürften sie in Zukunft zu einer ernsthaften Konkurrenz für die Oligothiophene (oben im Bil…
Abstract Nowadays, nanoporous films are widely employed in biochemical applications or in opto‐photonic devices such as displays, solar cells, or light‐guiding systems. In particular, the technological feasibility of nanoporous layers with low refractive indices has recently enabled the development of high‐efficiency…
Abstract Canola meal proteins were solubilized from canola flour at pH 12 using sodium hydroxide solution. Proteins were then precipitated sequentially at pH values ranging from 11 to 3 in decrements of 1 pH unit. The weight distribution and the properties of these fractions were analyzed. The majority (>76%) of th…
Abstract The nonisothermal crystallization behavior and melting characteristics of high‐density polyethylene (HDPE) in HDPE/teak wood flour (TWF) composites have been studied by differential scanning calorimetry (DSC) and wide angle X‐ray diffraction (WAXD) methods. Composite formulations of HDPE/TWF were prepared by…
Comprehensive structural studies on normal ferroelectric to relaxor crossover in $\text{Ba}({\text{Ti}}_{1\ensuremath{-}x}{\text{Zr}}_{x}){\text{O}}_{3}$ (BTZ) are performed using neutron total scattering measurements analyzed by reverse Monte Carlo modeling. In BTZ solid solution, we estimated the degree of the displ…