Materials Literature
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When a high-intensity laser pulse is focused into a liquid the energy is converted into mechanical energy via an optodynamic process. The conversion starts with plasma formation; this is followed by shock-wave propagation and the expansion of a cavitation bubble. A cavitation bubble developed near boundaries results i…
We present results of a theoretical analysis of the phosphorylation reaction in cAMP-dependent protein kinase using a combined quantum mechanical and molecular mechanics (QM/MM) approach. Detailed analysis of the reaction pathway is provided using a novel QM/MM implementation of the nudged elastic band method, finite…
Large-scale ZnO nanotube bundles were successfully synthesized by a single solution method at lower temperature. Every ZnO nanotube bundle is composed of closely packed nanotubes, with inner diameters of ∼350 nm and wall thicknesses of ∼60 nm, and forms radiating structures. The influence of the reaction time on the s…
Abstract Supramolecular chemistry is an exciting area of science that plays a central role in bringing different disciplines together, ranging from molecular medicine to nanotechnology. Materials science based on supramolecular interactions is an emerging field, which has made important steps forward in the past ten y…
Fe3O4 nanoparticles were synthesized by co-precipitation of Fe 3+ and Fe 2+ with NH4OH, and then silica was coated onto the surface of Fe3O4 by hydrolysis of TEOS. Coupling agent was also coupled with the surface of the nanoparticles and protein was immobilized. Morphology, particle size, and magnetic properties of th…
Nonwoven webs containing five different blends of bleached cotton with Lyocell rayon, bicomponent core/sheath polyester/polyethylene, or cotton comber noil were prepared by either light needlepunching, or light needlepunching followed by spunlacing (hydroentanglement). We optically acquired fiber bundle size measureme…
In the analysis and design of functional clothing systems, it is helpful to quantify the effects of a system on a wearer’s physical performance capabilities. Toward this end, a clothing modeling framework for quantifying the mechanical interactions between a given clothing system design and a specific wearer performin…
Blends of polybutylene (PB-1) and polypropylene were used to produce fibers at spinning speeds of 800-2100 m/min. Concentrations ranged from 0% PP to 100% PP. The stress-strain behavior of the resultant fibers was examined, and the fibers were analyzed for crystallinity via DSC (differential scanning calorimetry). Fib…
In hydroentanglement process, very fine water jets with high pressure impinge on the fiberweb, which is supported by forming wires. The impact of the jets causes fiber entanglement in the fiberweb and produces an integrated fabric with desired performance, texture, and appearance similar to the forming wires. It is im…
The aim of the paper was the modelization of the influence on the Ultraviolet Protection Factor (UPF) of the more representative properties of the wearing conditions of the garments, the tension produced in contact with the body and the wetness. The study was carried out on undyed woven fabrics manufactured with three…
A selective electrophilic nitration of meso-tetraarylporphyrin copper(II) and nickel(II) complexes, bearing in meso-aryl rings a variety of substituents (3- NO 2 , 3- CH 3 , 3- Cl , 2,3,4,5,6-pentafluoro-, and 2,6-dichloro-), is described. The reactions of the above porphyrinates, carried out in CHCl 3 at room tempera…
Various alkyl ammonium cations were ionically exchanged with the sodium cations of montmorillonites with two different cation exchange capacities (CECs). The organo-montmorillonites were compounded with polypropylene (PP) and the effect of filler-matrix interactions on the intercalation-exfoliation behavior and the me…
Abstract Light can be used as a precise stimulus by selecting suitable wavelengths, polarization directions, and intensity, allowing non-contact control. When photoresponsive (mostly photochromic) molecular units are combined with polymeric materials and liquid-crystalline materials, various types of smart photofuncti…
Nanocrystal Y2O3 powders with different grain sizes and various doping concentrations of Tb3+ were prepared by an autocombustion reaction. The size and surface effects on the 4f-5d transitions and energy transfers between Tb3+ ions were studied by using x-ray diffraction, transmission electron microscopy, fluorescent…
We present a facile one-pot method to fabricate water-dispersed near-infrared-emitting (650–800 nm) CdTeS alloyed quantum dots with high photoluminescence quantum yields (PL QYs). Due to the hydrolysis of thiol ligands, the sulfur was incorporated into the CdTe nanocrystals, forming CdTeS alloyed QDs. The effects of t…
The effect of bar sealing parameters on the heat seal strength of oriented polypropylene (OPP)/metallic cast polypropylene (MCPP) laminate film was investigated. Based on the results obtained from the parametric study, a bar sealing process window was developed. All points drop within the process window are combinatio…
Three polyurethane blends were made from segmented polyurethanes synthesized from desaminotyrosyl tyrosine hexyl ester (DTH), an L-tyrosine based diphenolic dipeptide, as chain extender. The soft segment of these polyurethanes is either polyethylene glycol (PEG) or polycaprolactone diol (PCL) and the diisocyanate is h…
Quaternary ammonium ionomers of Methacrylamidopropyltrimethyl ammonium chloride with N-substituted acrylamides were prepared at 55±1°C using azobiscyanovaleric acid (ACVA) initiator. The monomers and ionomers were characterized by 1H- and 13C-NMR spectroscopy and the copolymer composition was calculated from elemental…
A mechanistic model is developed to predict the general corrosion rate at the top of a gas pipeline. This model covers the three main processes involved in the top-of-the-line corrosion (TLC) phenomena: the dropwise condensation, the behavior of the chemistry in the condensed water, and the corrosion at the steel surf…
The effect of catalysts on ZnO nanowire growth was investigated by comparing the performances of Au, Pt, and Ag nanoparticles. Additional control of growth was achieved by implementing a substrate temperature of either 800 °C with a ZnO/graphite powder source or 500 °C with a Zn powder source. At 800 °C, the vapor−liq…