Materials Literature
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Abstract The morphology, rheology, and mechanical properties of the dynamically vulcanized thermoplastic elastomer based on EPDM/PP (60/40, w:w) containing 5, 10, and 20% of cellulose short fiber were studied. From the results it was found that addition of 5% of cellulose fiber has no significant effect on the maximum…
Abstract We report on the characterization of ternary Zn 1–x Co x O alloy crystalline films grown by electrodeposition onto FTO‐coated substrates. The Zn 1–x Co x O films have hexagonal wurtzite structure as shown by X‐ray diffraction measurements. The Co incorporation into the ZnO lattice is confirmed by the presence…
Abstract The broadband digital phase shifters are valuable for the modern phase array antennas. Under balanced condition, composite right/left‐handed transmission line (CRLH TL) is broadband because of its unique hyperbolic‐linear dispersion relations. A broadband 4‐bit digital phase shifter based on the broadband pro…
A series of pH-sensitive polyaspartamide derivatives were prepared by grafting 1-(3-aminopyl)imidazole (API) and O-(2-aminoethyl)-O'-methylpolyethylene glycol (MPEG, M(w):5000), as a pH sensitive moiety and hydrophilic group, respectively. The effect of the polymer composition was examined. The UV transmittance of the…
Abstract Homogeneous and high‐quality free‐standing poly(1,6‐bis(carbazolyl) hexane) (P2Cz‐H) and poly(1,12‐bis(carbazolyl)dodecane) (P2Cz‐D) films were electrochemically synthesized in CH 2 Cl 2 + 0.1 M tetrabutylammonium tetrafluoroborate solution. The electrochemical and physical properties indicated that the quali…
Abstract Lanthanum isopropoxide (La(O i Pr) 3 ) has been synthesized and employed for ring‐opening polymerization of 1,4‐dioxan‐2‐one in bulk as a single‐component initiator. The influences of reaction conditions such as initiator concentration, reaction time, and reaction temperature on the polymerization were invest…
Starch and polystyrene (PS) were mixed at 70:30, 80:20, and 85:15 ratios with 0.5 and 1% talc and extruded into loose-fill packaging foams. Azodicarbonamide (ADC), at 0, 0.2, and 0.4 wt %, and citric acid, at 0, 0.25, and 0.5%, were added as blowing agents to enhance the radial expansion and functional properties of f…
The orientational ordering of the nematic phase of a polyethylene glycol (PEG)-peptide block copolymer in aqueous solution is probed by small-angle neutron scattering (SANS), with the sample subjected to steady shear in a Couette cell. The PEG-peptide conjugate forms fibrils that behave as semiflexible rodlike chains.…
Abstract Coagents are vinyl monomers that react with free radicals formed by peroxide dissociation and are either grafted to elastomer chains or homopolymerized within a segregated phase to form a crosslinked network. The initial phase distribution within the elastomer matrix is of great importance for the final user…
The deposition of an organic copper precursor Cu[OCHMeCH 2 NMe 2 ] 2 on the surface of mesoporous silica MCM-41 dehydrated at 773 K was studied under high-vacuum conditions by infrared spectroscopy combined with elemental analysis, X-ray absorption spectroscopy (XAS), thermogravimetric analysis (TG), temperature-progr…
Abstract Various types of bonding agents have been tried with blends of bagasse fibers and some thermoplastics such as low‐density polyethylene (LDPE), high‐density polyethylene (HDPE), polystyrene (PS), polypropylene (PP), and polyvinyl chloride (PVC). These bonding agents are, namely, pentaerythritol tetracrylate (P…
Ba 4 In 6− x Mg x O 13− x /2 solid solutions have been prepared for 0 ≤ x ≤ 0.4 and their crystal structures have been studied by transmission electron microscopy and X-ray powder diffraction. The compounds adopt a modulated structure with a face-centered orthorhombic average unit cell with a 0 ≈ a p √2, b 0 ≈ 20.5Å,…
Abstract In this work, we compare different precursor approaches for the mild decomposition to copper–aluminum and –gallium powder materials in nonaqueous solution. Referring to previous work on the preparation of Cu–Al alloy materials from [(AlCp*) 4 ] and [CpCu(PMe 3 )], the amine‐stabilized metal trihydrides [(Me 3…
Colored hybrid coatings with efficient mechanical properties have been elaborated by introducing goethite (α-FeOOH) nanorods and maghemite (γ-Fe 2 O 3 ) nanospheres in a poly(hydroxyethyl methacrylate) (PHEMA) matrix. The resulting hybrid coatings have been characterized with regard to the dispersion state of the part…
Lithium metal can be used to reduce single-walled carbon nanotubes (SWNT) to carbide-like species under the catalytic effect of di- tert -butyl-biphenyl (DTBP). The resulting nanotube polycarbanions show a significantly increased dispersability in THF and react “in situ” with trimethylchlorosilane, methyl methacrylate…
The X-ray polarization anisotropy of anomalous scattering in crystals of brominated nucleic acids and selenated proteins is shown to have significant effects on the diffraction data collected at an absorption edge. For conventionally collected single- or multi-wavelength anomalous diffraction data, the main manifestat…
Abstract The aim of this paper is to provide a framework, whereby gas permeation rates through plastic packaging walls, and hence, food shelf life may be estimated. Although the approach is quite general, specific attention is given to the case of liquid‐filled polyethylene terephthalate (PET) bottles with oxygen as t…
The hydrogen/deuterium-exchange (HDX) method, coupled with neutron diffraction, is a powerful probe for investigating molecular dynamics. In the present report, general determinants of HDX are proposed based on 12 deposited neutron protein structures. The parameters that correlate best with HDX are the depth within th…
In this work, NaYF 4:Eu 2+ microcrystals with an intense blue luminescence were successfully fabricated via a solution-based route. During the sample preparation, oleic acid and cetyltrimethylammonuim bromide were used as the surfactants to tune the morphology, while citric acid was taken as a ligand to stabilize the…
NO molecules adsorbed on a Pt(111) surface from dipping in an acidic nitrite solution are studied by near-edge X-ray absorption fine structure spectroscopy (NEXAFS), X-ray photoelectron spectroscopy (XPS), low-energy electron diffraction (LEED), and scanning tunnelling microscopy (STM) techniques. LEED patterns and ST…