Materials Literature
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Poly (methyl methacrylate)/zirconium dioxide (PMMA/ZrO2) nanocomposites were prepared by the incorporation of ZrO2 nanoparticles in various proportions (2, 4, 6, 8, and 10%) with PMMA matrix by in situ emulsifier-free emulsion polymerization technique. The structural property of PMMA/ZrO2 nanocomposites was studied by…
Abstract A new poly(3‐butylthiophene) derivative with one terminus functionalized with a 1H,1H,2H,2H,3H,3H‐perfluoroundecyl group (P3BT‐F 17 ) is synthesized by Ni‐catalyzed quasi‐living polymerization and the subsequent quenching of living ends by allyl‐Grignard reagent and the attachment of a fluoroalkyl chain. The…
We present a study of site and bond percolation on periodic lattices with three nearest neighbors per site. Essentially all previous studies of percolation in 3D have considered coordination numbers of 4 or higher, but 3-coordinated lattices have attracted recent interest for their unusual symmetries and relevance to…
In recent years, consumers have begun showing an increased interest in environmentally friendly fibers along with growing concerns about environmental problems. This trend encourages the development and use of fibers from renewable sources as substitutes for petroleum-based synthetic fibers in the textile and apparel…
Zinc oxide thin films were deposited, by radio frequency magnetron sputtering, on heated and unheated substrates. The oxygen flow rate was varied during deposition, and its effects on the structural and chemical properties of the films were investigated. The films had oriented c‐axis growth with nano‐crystallite size.…
Abstract Well‐ordered ultrathin films (UTFs) of {pyrenetetrasulfonate(PyTS)/ZnS} n were fabricated by alternating assembly of 1,3,6,8‐PyTS and exfoliated Zn 2 Al layered double hydroxide (LDH) nanosheets through layer‐by‐layer (LBL) electrostatic deposition, followed by an effective in situ gas/solid sulfurization rea…
The synthesis of a series of new fluorinated phthalocyanines and porphyrins as potential bimodal probes is evaluated. In these complexes, zinc phthalocyanine functions as a fluorescence imaging moiety while attachment of an aliphatic chain of different lengths bearing a tosylate group permits introduction of fluorine…
Nonlinear vibration and instability of embedded double-walled carbon nanocones subjected to axial load are investigated in this article based on Eringen's nonlocal theory and Timoshenko beam model. The elastic medium is simulated as Pasternak foundation and the van der Waals forces between the inner and the outer laye…
The aim of this paper is to examine the performances of thermoelectric generator based on microelectromechanical systems technology (MEMS) in wide range of operational conditions. The goal is to evaluate capability of this technology for a development of an independent energy source for aircraft applications. Complex…
This article establishes a theoretical model to study the effect of grain boundary sliding deformation on the dislocation emission from the crack tip in nanocrystalline solids. Within our description, stress concentration near the crack initiates grain boundary sliding which results in the formation the dipole of disc…
The functionalization of natural fibers is an important task that has recently received considerable attention. We investigated the formation of a hydrophobic layer from amphiphilic diblock copolymer micelles [polystyrene-block-poly(N-methyl-4-vinyl pyridinium iodide)] on natural fibers and on a model surface (mica).…
Colloidal particles embedded within nematic liquid crystals exhibit strong anisotropic interactions arising from preferential orientation of nematogens near the particle surface. Such interactions are conducive to forming branched, gel-like aggregates. Anchoring effects also induce interactions between colloids disper…
We present a study of the structural and physical properties of directly hole-doped LaFe${}_{1\ensuremath{-}x}$Mn${}_{x}$AsO ($x=0.0\ensuremath{-}0.2$) and the influence of charge compensation by additional F doping in LaFe${}_{0.9}$Mn${}_{0.1}$AsO${}_{1\ensuremath{-}y}$F${}_{y}$ ($y=0.1\ensuremath{-}0.5$). High-quali…
In this paper, we describe a procedure for the phase transfer of silver nanoprisms (AgNPrs) from aqueous solution to chloroform via an amide coupling reaction. AgNPrs are first modified with 16-mercaptohexadecanoic acid (MHA), and then primary or secondary amines are attached to the carboxylic acid end of the MHA liga…
In this study, novel acrylated epoxidized hemp oil bioresin was used in the manufacturing of jute fibre reinforced biocomposites. The 100% biocomposite laminates were characterised in terms of mechanical properties (tensile, flexural, Charpy impact and interlaminar shear), thermo-mechanical properties (glass transitio…
ABSTRACT Natural rubber was enhanced with soy protein nano‐aggregates and carbon black using a hybrid process. The rubber composites reinforced with an optimum amount of soy protein or soy protein/carbon black showed useful tensile properties. The stress‐strain behaviors were analyzed with a micro‐mechanical model tha…
Solubilities of 2-benzoyl-3-chlorobenzoic acid and 1-chloroanthraquinone in organic solvents of ethyl acetate, acetone, 1,4-dioxane, and toluene were determined experimentally in the temperature range from (273.15 to 323.15) K by gravimetric method. The experimental results indicate that the solubility of 2-benzoyl-3-…
A series of compounds of composition A[Cu I (F 4 TCNQ II– )] (A = a quaternary ammonium or phosphonium cation, F 4 TCNQ II– = the dianionic form of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) have been synthesized and structurally characterized. In each structure, an anionic [Cu I (F 4 TCNQ II– )] − framewor…
Several studies have shown that heterogeneous agents are able to reduce required starting protein concentration and induction time for crystallization. However, in many cases, the molecular mechanism by which heterogeneous agents promote the nucleation is still unclear, although examples of epitaxial crystallization h…
For two-dimensional dislocation dynamics simulations under periodic boundary conditions in both directions, the summation of the periodic image stress fields is found to be conditionally convergent. For example, different stress fields are obtained depending on whether the summation in the x -direction is performed be…