Materials Literature
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The aim of the study was to control the size of gelatin nanoparticles under varied conditions of nanoprecipitation. The gelatin concentration in the solvent phase and different combination of nonsolvents was used to see influence on the size, polydispersity and recovery yield of produced nanoparticles. The size of the…
A novel nonlinear chalconyl homologous series of ester: RO-C 6 H 4 -COO-C 6 H 4 (m)-CO-CH:CH-C 6 H 4 -OC 16 H 33 (n) (para) have been synthesized and studied with a view to understand and establish the relation between thermotropic liquid Crystal (LC) properties and geometrically nonlinear shaped molecular structure.…
Although the homeotropic alignment of liquid crystals is widely used in LCD TVs, no easy method exists to measure its anchoring coefficient. In this study, we propose an easy and convenient measurement technique in which a polarizing optical microscope is used in the reflective mode with an objective lens having a low…
A comprehensive study on the inhibitory effect of some para-Hydroazopyrazolone (antipyrine) derivatives verse mild steel corrosion in 1 M HCl solution has been performed by chemical method(WL), electrochemical techniques (Tafel polarization, electrochemical frequency modulation (EFM) and electrochemical impedance spec…
Abstract In recent years, organosilane-containing copolymers have attracted much attention in antifouling coatings, automotive coatings, fiber, composite materials, biomedical materials, and latex and protection coatings against corrosion owing to their excellent weathering and low surface energy. Trimethoxysilane-con…
Abstract In presented studies the photocatalytic decomposition of NOx on gypsum plates modified by TiO 2 -N,Cphotocatalysts were presented. The gypsum plates were obtained by addition of 10 or 20 wt.% of different types of titanium dioxide, such as: pure TiO 2 and carbon and nitrogen co-modified TiO 2 (TiO 2 -N,C) to…
Abstract The influence of vanadium dioxide VO 2 (B) on thermal decomposition of ammonium perchlorate (AP) has not been reported before. In this contribution, the effect of VO 2 (B) nanobelts on the thermal decomposition of AP was investigated by the Thermo- Gravimetric Analysis and Differential Thermal Analysis (TG/DT…
Polyethylene glycol (PEG) coatings have been commonly used in reducing protein adsorption with the intent of improving a biomaterial's biocompatibility. To elucidate the role of PEG surface density in reducing protein adsorption, two types of grafted PEG surface density gradients were evaluated for the adsorption and…
Ferrite–ceramic materials are widely used in electronics. The most widely used is Mn–Zn ferrite due to its high permeability. However, Mn–Zn ferrites obtained by the standard process flow (ITS) have texture along the pressing axis which significantly reduces their permeability and causes anisotropic properties. The di…
Homologous series RO-C 6 H 4 -CH=CH-COO-C 6 H 4 -CO-CH=CH-C 6 H 4 -OC 14 H 29 (P) of chalconyl novel derivatives have been synthesized and studied with a views to understand and establish the relation between molecular structure and the liquid crystal (LC) properties of thermotropic mesomorphs Series consists of thirt…
Abstract In this paper, we disclosed the realization of a “continuous” nano‐structured alignment patterning for thin film Pancharatnam‐Berry phase (PBP) diffractive lens by the use of spatially linear polarized light converter technology. High optical quality thin liquid crystal polymer (LCP) film PBP lens with F numb…
Distribution of the clay minerals in the Jurassic-Tertiary consolidated sediments of the Kopet Dagh Basin (KD) was investigated to study the origins of the clay minerals and to reconstruct the paleoclimate of the area.The entire sedimentary rock sequences of the KD were sampled for XRD, XRF, high resolution microscopy…
Plant extracts have become important as an environmentally acceptable, readily available and renewable source of wide range of inhibitors. Tannins, a class of natural, non-toxic and biodegradable polyphenolic compounds, extracted from plant sources are already used as corrosion inhibitors in aqueous media. This study…
The effect of high-temperature shock compression conditions on the degree of transformation of silicon nitride into a cubic γ-modification at pressures of 36 and 50 GPa in planar recovery ampoules is studied. The x-ray Rietveld method is used to determine the quantitative phase composition before and after shock compr…
ABSTRACT Micro and nanofibrillated cellulose is an essentially one‐dimensional high aspect‐ratio particle material, which can undergo two‐dimensional layer (band) structuring under shear. Controlling the evolving rheological properties in aqueous suspension is essential for industrial applications in composite materia…
ABSTRACT The influence of octakis(n‐hexadecyldimethylsiloxy)octasilsesquioxane (hdPOSS) on rheological and thermal properties of linear low‐density polyethylene was investigated. Rheological evaluations realized by two different measuring techniques (rotational and extensional rheometry) allowed to obtain a wide range…
Background and Objectives: Preparation and evaluation of nanocomposite films have become prevalent in recent years. One of the most important methods for dispersing nanoparticles in polymers is the use of ultrasound radiation. Polyvinyl alcohol-montmorillonite (PVA-MMT) nanocomposite films were prepared via solvent ca…
Hybrid nanoparticles npSi/SiO x , having bright broadband photoluminescence (PL), have been synthesized using thermal disproportionation of silicon monoxide method and were used to derive sols and polymeric composites in the form of microdispersed PTFE particles and PBMA films. The peculiarities of behavior of both sh…
The paper presents the main methods of surface free energy calculation of solids based on the contact angle measurement. The basic of splitting the surface free energy into components as well as interactions at the solid-liquid boundary phase considered while developing calculation models were presented. Basing on tes…
Co and Fe doped manganese oxide thin films were prepared by anodic deposition at current density of 50 mA cm(-2) using the electrolyte containing manganese sulfate and either cobalt sulfate or ferrous sulfate. Surface morphology and crystal structure of oxides were studied by scanning electron microscope (SEM) and X-r…