Materials Literature
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This paper presents a study on the air permeability of socks manufactured using the yarns of new kinds of fibres, such as soybean, bamboo, cotton/seacells and bamboo/flax. The air permeability of plain pure knits and plated knits of textured polyamide (PA) and elastane (Lycra) wrapped with textured polyamide threads w…
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High solid content nanocomposites based on poly(methyl methacrylate-co-butyl acrylate)/nanosilica was synthesized via miniemulsion polymerization in a semi-continuous operation. Oleic acid was used to act as a coupling agent between silica surfaces and polymer. Latexes with solid content of 42% were obtained, containi…
The degradation of the solid oxide fuel cell cathode material with respect to the oxygen exchange kinetics in - and -containing atmospheres has been investigated at . The material exhibits excellent stability in dry atmosphere over 1000 h. No appreciable degradation has been observed after exposure to a -rich atmosphe…
The syntheses of four new ditopic ligands (L1-4), based on N,N-functionalised 4-aminomethylpyridine, was achieved via a reductive amination methodology. The ligands react with fac-[Re(CO)(3)(di-imine)(MeCN)](OTf) to give the mixed-ligand species fac-[Re(CO)(3)(di-imine)(L1-4)](OTf). X-Ray crystallography has been used…
We study dilute solutions of poly(2,3-diphenyl phenylene vinylene) with hexyl (DP6-PPV) and decyl (DP10-PPV) side chains in two solvents, chloroform and toluene. For this purpose, atomistic and coarse-grained models are parametrized using quantum-chemical calculations and structure-based coarse-graining, respectively.…
The nanometric organization of MOx (M = Co, Zn, Ni) domains partially embedded inside the mesoporous silica walls but accessible to the pore voids, which is achieved through a simple one-pot surfactant-assisted procedure, define optimal anchors for the nucleation and growth of gold nanoparticles, which in turn favours…
Several shapes of Eu2+ doped strontium aluminate have been simply obtained by hydrolysis of Sr2+ and Al3+ in hydrothermal and solvothermal systems under mild conditions. The influence of reaction conditions on the formation of the samples has been considered. Flower-like nanoparticles are synthesized in glycol, when t…
A coarse-grained simulation model for a third generation liquid crystalline dendrimer (LCDr) is presented. It allows, for the first time, for a successful molecular simulation study of a relation between the shape of a polyphilic macromolecular mesogen and the symmetry of a macroscopic phase. The model dendrimer consi…
Imidazolium-modified carbon nanohorn-based hybrid materials have been prepared and characterized by complementary spectroscopic, thermal and microscopy techniques, while the counter-anion of the positively charged imidazolium fragment has been identified by electron dispersive X-ray analysis. In particular, oxidized c…
We demonstrate that van der Waals interactions can be used to self-assemble a small, controlled number of magnetic nanoparticles onto metallic and semiconducting carbon nanotubes. We study the effect of the sequential grafting on the room temperature transport properties of carbon-nanotube electronic devices containin…
An antiferromagnetic interaction of J = -51 cm(-1) has been obtained in a NCS-bridged {Mo(III)-Ni} compound (i.e. [{Mo(NCS)(6)}{NiL}(2)(NCS)](n)), a value twice as large as for the homologous {Cr(III)-Ni} derivative. The DFT calculated spin distribution on {Mo(NCS)(6)}(3-) reveals noticeable spin on the S atoms.
Mixtures of MgO-TiO2 were mechanically activated using high-energy planetary ball mill during 5, 10, 20, 40, 80 and 120 minutes. Sintering process was preformed in air at 1100o-1400oC for 2h. The decrease in powder?s particle size was noticed as the time of mechanical activation increased and confirmed by particle siz…
A series of anionic water-soluble dendronized conjugated polymers PG0, PG1 and PG2 are synthesized by copolymerization of dendritic macromonomers and phenyldiboronic ester via direct Suzuki polycondensation reaction in THF–water solution. Water solubility and solution photoluminescence quantum yield increase with incr…
Magnetic nanoparticles belong to the most promising nanosized objects for biomedical applications. However, little is known about clearance of magnetic nanoparticles from the organism. In this work superparamagnetic iron oxide particles fluidMAG‐ARA were injected into tail vein of mice at a dose of 17 mg per 20 g body…
The surface chemistry of crotonaldehyde and propene, primary and secondary reaction products in the aerobic selective oxidation of crotyl alcohol, has been studied by temperature-programmed reaction over Au/Pd(111) surface alloys. Gold strongly promotes desorption versus reaction at mole fractions > or = 0.3 (crotonal…
We analyzed the influence of the redox global regulator Anr on the accumulation of poly(3-hydroxybutyrate) (PHB) in Pseudomonas extremaustralis. Anr regulates a set of genes in the aerobic-anaerobic transition including genes involved in nitrate reduction and arginine fermentation. An anr mutant was constructed using…
Nanocrystallite Mn doped Zn 1-X S (X = 0 to 0.4) powders have been synthesized through a hydrothermal route. The effect of the hydrothermal temperature and Mn 2+ ions substitution on the crystal structure, crystallite size, microstructure and magnetic properties were investigated using (XRD), (SEM) and (VSM). The resu…
The current interest for natural fibers as an environmentally correct composite reinforcement has motivated the investigation of new possibilities. For instance, the fibers extracted from the petiole of the buriti palm tree were recently found to have adequate mechanical properties to reinforce polymer composites. The…
Orderly YPO4:Eu3+ olivary architectures with a length of about 8 μm and a diameter of about 5 μm have been synthesized successfully by a limited anion-exchange reaction (LAER) under hydrothermal conditions. These 3D olives in fact are composed of irregular tetragonal nanoflakes with an average size of 1500 × 1000 × 60…