Materials Literature
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Glycolipids are amphotropic liquid crystals forming lyotropic liquid crystals in aqueous solutions and thermotropic liquid crystals in their dry form. We report studies on the thermotropic properties of seven different neat glycolipids: four maltoside, two glucoside and one pyranoside lipids. Optical birefringence, el…
In earlier parts of the series, we investigated the influence of the woven and weft knitted fabric structures on their frictional characteristics, and then defined new indices as the fabric—structural—asperity index (FSAI). In this paper, we have developed this index for warp-knitted fabric structures, to explain the…
Abstract Summary: Cationic gelators, capable of gelling alcohols, were developed as structure‐directing agents for preparing metal oxides. The sol‐gel polymerization of metal alkoxides using the gelators as templates afforded metal oxide nanotubes. The unique structure of metal oxides was created by transferring the s…
Development of polymorph control procedures for PF00287586 and AG035029 is described herein. For PF00287586, investigations were undertaken to control formation of both identified polymorphs, Form A and Form B. Solvent screening methodology was employed to find a solvent system that inhibited the solvent-mediated tran…
Abstract Synthetic precipitated amorphous white silica nanofiller was used to reinforce and crosslink styrene-butadiene rubber (SBR). The silica surfaces were pre-treated with bis[3-triethoxysilylpropyl-)tetrasulfide (TESPT) bifunctional organosilane. TESPT chemically adheres silica to rubber and also prevents silica…
The kinetics of base-catalyzed hydrolysis of 4-nitrophenyl acetate was studied in water and water-ethanol mixtures under ultrasound (21.1 kHz) using a probe equipped with a quartz horn and, by comparison, without sonication. The ethanol concentration was varied from 0 to 50 wt % and pH from 7.5 to 9. The increase of r…
A new particle‐ and resin‐free system composed of transparent, binary single crystals entangled with each other continuously has been successfully developed for a light source for illumination. These single crystals exist in a semi‐coherent state like a block copolymer; one of these single crystals exhibits effective…
According to the theory of light scattering by small randomly oriented particles, the intensity ratio I VH/I VV cannot exceed 1/3 (van de Hulst, 1957; Kerker, 1969; the subscripts V and H denote the vertical and horizontal polarizations with respect to the scattering plane). In this paper, it is shown that this statem…
Nanocomposites of polypropylene (PP) and vermiculite (VMT) were successfully prepared by solid-state shear compounding (S3C) using pan-mill equipment without any compatibilizer. The structure and morphology of nanocomposites were determined by X-ray diffraction and scanning and transmission electron microscopy techniq…
CdS nanoparticles with different sizes ranging from 2.5 nm to 300 nm and nanorods with aspect ratio -32 were synthesized by simple solvothermal process with a view to explore the effect of size and shape on the optical properties of these nanoforms. Solvent, temperature and the Cd source played important role in deter…
The objective of this study (Part II) paper is to develop a dry actuator for wider application than the wet actuator. To form a dry actuator, a carbon nanofiber (CNF) actuator is based on a solid polymer electrolyte (SPE). The SPE film is prepared from polymethyl methacrylate (PMMA), an ion-exchange material, a plasti…
Abstract We have previously presented the effect of adhesion-promoter resins, used in the belt compound of tires, on the mechanical properties of the rubber compounds. We have also proposed that the presence of certain adhesion-promoting resins could lead to the formation of a copper sulfide adhesion layer that might…
ZnO thin films were deposited at different repetition rates of 5 Hz and 10 Hz by pulsed laser deposition. X-ray diffraction (XRD) full widths at half maximum (FWHMs) of (002) ZnO peak in ZnO thin film deposited at 5 Hz and 10 Hz was 0.22 and <TEX>$0.26^{\circ}$</TEX>, respectively. The grain size of ZnO thin film depo…
We consider the ESR of Co2+ in different environments: in an regular octahedron (Co2+ in a MgO crystal), in a deformed octahedron (Co2+ in single crystals and powder samples of NH4NiPO4.6H2O) or in a trigonal bipyramid (Co2+ in powders of Co2(OH)PO4 and Co2(OH)AsO4). We study the effect of the non-cubic crystal fields…
On-line partial discharge (PD) measurements are an efficient method for detecting certain insulation defects of cables. These include defects in cable joints and terminations, and defects due to mechanical impact. Noninvasive, efficient, and widely applicable, portable on-line PD measurement techniques are strongly fa…
The adsorption and covalent immobilization of human immunoglobulin (HIgG) and lysozyme (LYZ) on surface-modified poly(tert-butyl methacrylate) PtBMA films have been evaluated using x-ray photoelectron spectroscopy (XPS), ellipsometry and atomic force microscopy (AFM). Surface modification of PtBMA (UV irradiation) aff…
The long-capillary method was used to measure chemical diffusion in molten AlNiCe alloys. The interdiffusion coefficients were determined for a mean concentration of Al87Ni10Ce3 at 1273 K and for a mean concentration of Al77Ni20Ce3 at 1373 K. The absence of major convection disturbances and of macro-segregation was de…
This work investigates the application of artificial neural network modeling (ANN) to model the relationships between fiber, yarn, and fabric properties and the pilling propensity of single jersey and rib pure wool knitted fabrics based on the ICI Pilling Box method. Validation of the model on an independent validatio…
O desempenho e o custo de compósitos podem ser alterados por hibridização e, neste sentido, é relativamente comum o uso combinado de fibras e reforços minerais no desenvolvimento destes materiais. No presente trabalho o desempenho mecânico de compósitos poliéster insaturado/ tecidos híbridos sisal-vidro foram investig…
We have performed photoelectron emission microscopy measurements with hard X-rays (HX-PEEM) and have shown that HX-PEEM has a spatial resolution higher than 106 nm for observing the sample surface and can detect signals from a Au layer buried under a 50-nm-thick Co layer. These results mean that HX-PEEM has a probing…