Materials Literature
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Nickel-coated carbon fiber ( NiCCF ) material is of interest to a number of important industry sectors. The present paper reports a complex study of the corrosion performance of 12K (12,000 single filaments) NiCCF composite tows. The corrosion behavior of this material was examined in dilute H 2 SO 4 , Cl − -based neu…
The crystal structure of the nacrite mineral of the kaolin group (space group Cc; R = 2.76%; 634 unique reflections) is refined from the digital oblique-texture electron diffraction patterns obtained with the use of imaging plates. The maxima characterizing the locations and potentials of the hydrogen atoms of the hyd…
The solvent driven self-aggregation studies of several meso-“C-glycoside”-porphyrin derivatives have been carried out, showing the effect of bulk solvent properties, and of the structure of the molecular framework, on the supramolecular chirality of the mesoscopic final architectures.
Water-repellent and self-cleaning properties of lotus leaves are considered to be due to its double roughness structure, protrusion structure (approximately 20 microm) and hairy structure (0.2-1.0 microm). In this study, attempts to fabricate a spatially periodic double roughness structure by two far-from-equilibrium…
Design strategies for oxidation-resistant intermetallic and advanced metallic alloys p.
A porous clay heterostructure (PCH) from a Mexican clay was prepared and characterized, and its aqueous phenol and dichlorophenols (DCPs) adsorption capacities were studied using a batch equilibrium technique. The PCH displayed a surface area of 305.5 m2/g, 37.2 A average porous diameter, and a basal space of 23.2 A.…
Chemical compositions and basic properties of smart materials (ferroics, biferroics, mul- tiferroics) are introduced in this paper. Single phase and composite ferroelectromagnetics are characterized in detail. Multiferroic ferroelectromagnetics are materials which are both ferro- magnetic/ferrimagnetic/antiferromagnet…
The application of Mg-rich primers (MRPs) for the protection of aluminum structures represents an attractive alternate to the environmentally unfriendly Cr-rich primers that are presently used. The protective modes of MRPs are similar to those of Zn-rich primers (ZRPs) on steel and include cathodic protection driven b…
This paper presents a surface science perspective on sidewall functionalisation of carbon nanotubes. Carbon nanotubes are varyingly described by physicists as extended solids or by organic chemists as molecules. As prototypical nanostructures, they are indeed a little bit of both. Their chemistry and resulting potenti…
Abstract Summary: Monodisperse polystyrene (PS) microspheres with different sizes were prepared by dispersion polymerization in dispersion media of ethanol/water and isopropayl alcohol/water, respectively. The effect of polarity of the dispersion medium, stabilizer and initiator concentration on the average sizes and…
The effect of annealing on the pitting corrosion resistance of anodized Al–Mg alloy processed by equal-channel angular pressing (ECAP) was investigated by electrochemical techniques in a solution containing 0.2 mol·L−1 of AlCl3 and also by surface analysis. The degree of internal stress generated in anodic oxide films…
In our pursuit to develop suitable therapeutic particulate systems for intratumoral delivery by the targeted multi-therapy (TMT) technique, we describe the preparation of paclitaxel-loaded poly(D,L-lactic-co-glycolic) acid (PLGA) microparticles (MPs) (drug loading 35-38%, wt/wt; size 0.7-5 microm). Magnetite (15%, wt/…
Multiwalled carbon nanotubes (MWCNTs) were prepared by the thermal chemical vapor deposition (CVD) technique. Monometallic and bimetallic Co and Ni combinations were used as a catalyst on MgO support. The mixer of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mtext>H</mml:mtext><mml:mn>2</mml:…
The ionic transport properties of dense nanocomposites of yttria-doped ceria (YDC) and yttria-stabilized zirconia (YSZ), in a volume ratio of 1 : 1, have been investigated by electrochemical impedance spectroscopy. These materials were prepared by means of a fast-firing process starting from nanopowders with high spec…
J-type aggregation of organic chromophores into inorganic host matrixes provides a useful route toward materials showing strong second-order nonlinear optical (NLO) response. The increased NLO response of J-aggregates is related to the peculiar arrangement of the NLO-phores into the host matrix, which produces the app…
Single crystal X-ray structure determinations of [(n-C5H11)4N]3[H3V10O28].2(CH3)2CO (TAA-acetone), [(n-C5H11)4N]8[H3V10O28]2[H4V10O28].7C4H8O2 (TAA-dioxane), [(n-C5H11)4N]3[H3V10O28] (TAAh) and [(n-C6H13)4N]2[H4V10O28].4C4H8O2 (THA-dioxane) revealed that protonation and hydrogen bond formation of decavanadate anions i…
We reported an approach to fabricate integrated arrays of palladium (Pd) and platinum (Pt) nanotubules with high aspect ratios on aluminum sheets by a critical-potential anodization and an electroless deposition. The critical-potential anodization provided ordered porous anodic alumina (PAA) films as supporting materi…
In this paper we demonstrate the hydrogenolysis of nickelocene can take place through a self-catalyzed process at low temperature ( < 70 ° C ) in supercritical carbon dioxide to generate relatively uniform dispersed Ni (nickel) metal particles onto carbon nanotubes forests and Ni films on flat surfaces. The ability to…
Poly(ether imide) (PEI) membranes of which the surface was modified with carboxylic groups were tested in comparison to pure PEI and poly(ethylene terephtalate) (PET) for their ability to support attachment, growth and function of human umbilical vein endothelial cells (HUVEC) with respect to endothelization of the ab…
A series of new achiral porphyrins with hydrophobic dodecyl chains and hydrophilic substituents were designed in order to clarify the relationship between molecular geometry and aggregation as well as the supramolecular chirality in Langmuir-Schaefer films. These achiral porphyrins have zero (TPPA0), one (TPPA1), two…