Materials Literature
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Colloidal silica particles were synthesized by the sol-gel process and then modified with 3-methacryloxypropyltrimethoxysilane (γ-MPS) to induce vinyl groups on the surface of the silica particles. By means of in situ emulsion copolymerization of methyl methacrylate (MMA) and butyl acrylate (BA), a series of core-shel…
The influence of substrate dislocations on the passivation behavior of pure iron in a pH 8.4 borate buffer solution was investigated. Cold-rolling was employed to induce dislocation in the annealed substrate. The dislocation density on the cold-rolled substrate depended on the reduction ratio (Red) and was maximum at…
Gold and silver metal salts were reduced in the presence of phenylethylthiol as capping agent to form metal nanoparticles of 2.1–2.4 nm diameter. These clusters were then added to a sol–gel process using phenyltriethoxysilane as a hybrid component to optimize the dispersion of the metal particles in the matrix. The en…
The aim of this study was to investigate the effect of Poly(amidoamine) (PAMAM) dendrimers on corneal permeation of puerarin (PUE). Permeation studies were performed using excised cornea of rabbits by a Valia-Chien diffusion apparatus. Drug-treatment studies were carried out by measuring the penetration of puerarin on…
A microfluidic reactor heated by microwave (MW) irradiation was utilized for the first time to prepare LaF3/LaPO4 : Ce,Tb nanocrystals (NCs) using ethylene glycol (EG) as solvent. Redispersible and water-soluble LaF3 nanoparticles with a mean diameter of 4.5 nm, and LaPO4 nanorods with a length of 60–70 nm and diamete…
Mixing microphase-separating diblock copolymers and nanoparticles can lead to the self-assembly of organic/inorganic hybrid materials that are spatially organized on the nanometre scale. Controlling particle location and patterns within the polymeric matrix domains remains, however, an unmet need. Computer simulation…
We report an innovative and straightforward method to well-disperse a low loading content of inorganic nanofillers of extremely small size in exponentially growing layer-by-layer (LbL) assembled micrometre-thick polymeric coatings. Complexes of poly(acrylic acid) (PAA) and in situ synthesized CaCO3 nanoparticles (note…
Dehydrogenation of methanol on Pd(100) is systematically investigated using self-consistent periodic density functional theory. The theoretical results are compared with those of the same reaction on Pd(111) published very recently [J. Phys. Chem. C, 2009, 113, 4188-4197]. Switching from (111) to (100), adsorptions ar…
Inhibition of the corrosion of zinc in 0.01 to 0.0 4 M H 2 SO 4 by erythromycin was studied using weight loss and hydrogen evolution methods. The results obtained indicate that erythromycin is a good adsorption inhibitor for the corrosion of zinc in H 2 SO 4 solutions. The inhibition efficiency of erythromycin increas…
Alloy 22 electrodes crevice corroded under constant current conditions in 5 M NaCl at accumulated damage predominantly in the form of intergranular corrosion. Electron backscatter diffraction was used to determine the relationship between the location of damage and the crystallographic features of the grains and grain…
The effects of electron radiation on natural fibre reinforced polypropylene have been analyzed with the single fibre fragmentation test. Specimens of single hemp, flax, ramie and cotton fibres/fibre bundles embedded in a polypropylene sheet were irradiated with electron radiation of 10 MeV with intensities of 5, 15 an…
Hollow NiFe2O4 nanoparticles are synthesized by self-templating process utilizing coupled interfacial chemical reactions and Kirkendall effect between the core (Ni33Fe67) and the shell (NiFe2O4) of the core/shell structure. Reaction temperature and time dependent structural and morphogical transformations are presente…
Well-defined silver dendritic nanostructures have been prepared in large quantities in an ambient environment using formed activated carbon (FAC) only. A reasonable mechanism (step 1: reduction by surface reductive groups; step 2: growing in the form of a galvanic cell) is suggested.
A hierarchical nanoporous polymer film was fabricated through exponentially growing layer-by-layer assembly of weak polyelectrolytes without any template and post-treatment to greatly enhance loading capacity, release time and linear release range with pH-dependence for small molecules over the reported weak polyelect…
Fibers stripped of from the bamboo culm by longitudinal cutting are being considered as reinforcement of polymer composites owing to environmental benefits related to their biodegradable and renewable characteristics. The manual cutting process allows bamboo fibers with different diameters to be extracted from the cul…
We report the synthesis of a soluble perylene imide benzimidazole (PIBI) and its structural, thermotropic, optical and electrochemical characterization with emphasis on discotic liquid crystalline properties.
The photoluminescence of a series of Eu(3+) doped layered silicates (kanemite, octosilicate, magadiite and kenyaite) was examined; it was found that layer thickness affected the luminescence intensity, suggesting the possible effects of the spatial separation of Eu(3+) in the direction perpendicular to silicate sheets…
We report the direct determination of surface enthalpies for nanophase TiO2 anatase with different morphologies derived from drop solution calorimetry in a molten sodium molybdate (3Na2Oŀ4MoO3) solvent at 702 °C. The energetics of surface hydration has been measured using a Calvet microcalorimeter coupled with a gas d…
Chromogenic materials can be used in ‘smart’ windows to modify the incoming visible light and solar energy in buildings as well as for other see-through applications. Electrochromic (EC) windows seem to be ready for large-scale applications to provide energy efficiency and indoor comfort. This chapter attempts to give…
Circulatory vascular diseases, especially those arising from atherosclerosis, are the predominant cause of mortality and morbidity in the developed world. Current therapies include the use of autologous vessels or synthetic materials as vessel replacements. The limited availability of healthy vessels for use as bypass…