Materials Literature
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We have developed assay technologies to measure hydrolyzing enzymes based on homogeneous time-resolved fluorescence quenching (TruPoint). High sensitivity was obtained using fluorescent europium chelates as labels, internally quenched by suitable quenchers and released upon enzymatic reaction. This approach allows rob…
Abstract Fibers from renewable resources are gaining interest for use as fillers in hybrid composite materials. Particularly waste material such as sugar cane bagasse offer large availability, biodegradability, and low cost. Influence of single components on composite material properties is an important parameter to b…
Abstract The effects of glycerol and polyethylene‐grafted maleic anhydride (PE‐ g ‐MA) on the morphology, thermal properties, and tensile properties of low‐density polyethylene (LDPE) and rice starch blends were studied by scanning electron microscopy (SEM), differential scanning calorimetry, and the Instron Universal…
Abstract Polypropylene (PP)/organomontmorillonite (OMMT) nanocomposites have been successfully prepared by melt intercalation by using the conventional method of twin‐screw extrusion and subsequently submitted for melt‐spinning. The structure and properties of the PP/clay nanocomposites and hybrid fibers were characte…
Abstract The limnological characteristics of Salda Lake, a deep, soda and highly alkaline lake in the Lake District of southwestern Turkey, are presented. Physical and chemical variables indicate that the lake is composed of hydrochemically different water layers formed by groundwater sources located on the floor of t…
A new type of medical guide wire with functionally graded hardness from the tip to the end was developed with the use of Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys in the tip is drastically improved by controlling the grain size, whereas the end of the wire is hardened using bainitic…
Pd/PdO nanoparticles have been selectively synthesized within the SBA-15 complementary micropores located in the mesopore walls, resulting in a bifunctional material with stable nanoparticles (∼1.1 nm) and highly ordered open mesopore channels.
Abstract A mixture of diglycidylether of bisphenol A (DGEBA) and γ‐butyrolactone (γ‐BL) was cured in the presence of ytterbium triflate as a catalyst. The kinetics of the various elemental processes that occur in the curing process were studied by means of isothermal curing in the FTIR spectrometer. The kinetics of th…
Abstract Three polyurethane resins were synthesized from liquefied wood and three diisocyanates, i.e., TDI, IPDI, and HDI. The liquefied wood was obtained by the liquefaction of benzylated wood wastes using Dibasic esters (DBE) as solvent with hydrochloric acid as catalyst for 3 h, at 80°C. The thermal stability and m…
Abstract Surface wettability on anchorage‐dependent cells has an important role in cell growth rate. In our previous studies, we prepared a wettability gradient on polyethylene (PE) surfaces using corona discharge treatment from a knife‐type electrode whose power increased gradually along the sample length. The PE sur…
Oriented arrays of titania nanofibers have been fabricated by a simple and easily scalable method. Exposure to a 5 % H 2 /95 % N 2 gas mixture at 700 °C transforms dense, polycrystalline rutile (TiO 2 ) into arrays of single‐crystal nanofibers (15–50 nm diameter; see Figure, scale bar: 1 μm). The arrays could be used…
Abstract Composite film structures of common plastic polymers including polypropylene (PP) or poly(vinyl chloride) (PVC) with whey protein isolate (WPI) coatings may be obtained by a casting method. Optical and surface properties of the resulting WPI‐coated plastic films, as affected by protein concentration and plast…
Patterned arrays of ceramics have been fabricated using electron‐beam lithography (EBL) and a metallopolymer resist. Highly ordered arrays of dots, bars (see scanning electron microscopy and time‐of‐flight secondary ion mass spectrometry images in the Figure), and curved lines rich in Fe and Co are direct‐written on f…
Abstract Calcium carbonate‐filled syndiotactic poly(propylene) (CaCO 3 ‐filled s‐PP) was prepared in a self‐wiping, co‐rotating twin‐screw extruder. The effects of CaCO 3 of varying particle size (1.9, 2.8 and 10.5 μm), content (0–40 wt %), and type of surface modification (uncoated, stearic acid‐coated, and paraffin‐…
Abstract The novel flame retardant tris(3,5‐dimethyl‐4‐diphenyl phenoxy phosphate)isocyanurate (TDPI) was synthesized from the reaction of diphenyl chlorophosphate and tris(3,5‐dimethyl‐4‐hydroxybenzyl)isocyanurate. The compound was characterized with Fourier transform infrared spectroscopy, elemental analysis, mass s…
We study the properties of a solid-solid close-packed to body-centered tetragonal transition in a colloidal suspension via fluorescence confocal laser scanning microscopy, in three dimensions and in real space. This structural transformation is driven by a subtle competition between gravitational and electric dipolar…
Abstract Ethylene–propylene–diene rubber (EPDM)/montmorillonite (MMT) composites were prepared through a melt process, and three kinds of surfactants with different ammonium cations were used to modify MMT and affect the morphology of the composites. The morphology of the composites depended on the alkyl ammonium salt…
A novel synthesis route for mesoporous silicates using anionic surfactants has been recently reported. It was advanced that materials synthesized using anionic surfactants and aminosilane groups as co-structure directing agents led to the synthesis of highly ordered, novel mesoporous materials with unprecedented struc…
Highly porous and nano‐structured electrodes for low‐temperature solid oxide fuel cells have been fabricated using a combustion chemical vapor deposition process. The composite electrodes consist of small grains, about 50 nm as shown in the Figure, have extremely high surface area, low interfacial polarization resista…
Abstract Natural rubber (NR), polyurethane rubber (PUR), and NR/PUR‐based nanocomposites were produced from the related latices by adding a pristine synthetic layered silicate (LS; sodium fluorohectorite) in 10 parts per hundred parts rubber (phr). The dispersion of the LS latices in the composite was studied by X‐ray…