Materials Literature
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Abstract Low‐density polyethylene (LDPE) was filled with blends of different proportions of two sizes of calcium carbonate (CaCO 3 ; 600 and 2500 mesh). The torque of the LDPE/CaCO 3 samples was measured with a torque rheometer. The results showed that the process torque values of the LDPE/CaCO 3 samples obviously dec…
Abstract We have performed first principles total energy calculations to investigate the structural and reactivity parameters of the lithium and fluoride doped graphene and boron nitride coronene‐like (C 24 H 12 ) structure nanosheets. The exchange and correlations potential energies are treated in the local density a…
Abstract Epoxy/kaolinite nanocomposites were prepared by adding the organically modified layered kaolinite to an epoxy resin [biphenyl phenol novolac epoxy resin (BPNE)] with 4,4′‐diamino biphenyl sulfone (DDS) as a curing agent. The dispersion state of the kaolinite within crosslinked epoxy‐resin matrix was examined…
Mn-doped In 2 O 3 nanopyramids have been grown by a catalyst-free thermal process at 700 °C using InN and Mn 2 O 3 powders as precursors. Energy dispersive spectroscopy, as well as X-ray photoelectron spectroscopy, demonstrate the presence of Mn in the pyramids in a content below 1 at. %. In addition to pyramids, nano…
Macromolecular Gd(III) complexes are advantageous over small molecular Gd(III) complexes in contrast enhanced magnetic resonance imaging (MRI) because of their prolonged blood circulation and preferential tumor accumulation. However, macromolecular contrast agents have not been approved for clinical applications becau…
Abstract Diblock copolymers of poly( L ‐lactide)‐ block ‐poly(methyl methacrylate) (PLLA‐ b ‐PMMA) were synthesized through a sequential two‐step strategy, which combines ring‐opening polymerization (ROP) and atom transfer radical polymerization (ATRP), using a bifunctional initiator, 2,2,2‐trichloroethanol. The trich…
To increase the contrast between the “on” and “off” states, photochromic units may be coupled together through delocalized bridges. However, such a procedure is practically limited by the impossibility to achieve the conversion of all photochromes. In this letter, we investigate the structures and properties of a dith…
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…