Materials Literature
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A characteristic new cooperative dehydration transition, in 1:1 Laponite-MMT cogel, was observed at T(c) ≈ 60 °C, a temperature at which the storage modulus (G(')) and depolarization ratio (D(p)) showed sharp increase, and the isotropic cogel turned into an anisotropic one. The dehydration dynamics could be described…
Abstract Polypropylene (PP)/clay nanocomposite was melt‐compounded using high shearing/mixing and chaotic mixing, the former provided by kneading block sections in twin‐screw extruder and the latter by a convective screw. Effect of mixing type on rheological behavior and microstructure of nanocomposites was investigat…
Abstract Reaction of Zn II and Cd II thiocyanate or selenocyanate with pyrazine leads to the formation of new Zn II and Cd II coordination compounds. The structures of [Zn(NCSe) 2 (pyrazine) 2 ] n ( 1A ), [Cd(NCS) 2 (pyrazine) 2 ] n ( 2A ) and [Cd(NCSe) 2 (pyrazine) 2 ] n ( 3A ) consist of octahedrally coordinated met…
Na 8 CeSi 6 O 18 and Na 8 Ce 0.73 Ti 0.27 Si 6 O 18 (denoted CeSiO-CJ11A and CeTiSiO-CJ11B, respectively) were the first successful examples of Ce 4+ and Ce 4+ /Ti 4+ mixed silicates synthesized under mild hydrothermal conditions at 503 K. Their isostructure is confirmed by the powder X-ray diffraction (XRD) analysis.…
Abstract Regions of space are defined to maximize the probability to find two electrons in it. They can be interpreted as regions where Lewis’ electron pairs are most likely to be found. These maximum probability domains (MPDs) provide information similar to that obtained from the electron localization function (ELF),…
Functionalized nanoporous materials have broad utility for catalysis applications. However, the kinetics of catalytic reaction processes in these systems can be strongly impacted by the anomalous transport. The most extreme case corresponds to single-file diffusion for narrow pores in which species cannot pass each ot…
Thorough conformational analyses have been performed on representative sulfur, oxygen, and nitrogen mustards. A total of 23, 18, and 38 unique conformers have been located for SM, OM, and NM, respectively, at the MP2/aug-cc-pVDZ level of theory. Despite the fact that these molecules differ only in the identity of the…
Abstract Polymer nanocomposites based on an amorphous polyamide (aPA) modified with three organoclays were obtained in the melt state. The observed T g decreases indicated that some organic modifier of the OMMT (surfactant) migrated to the matrix during mixing. The decrease in the thermal stability of the aPA in nitro…
We analyze a manifestation of the partial ordering transition of adatoms on graphene in resistivity measurements. We find that the Kekul\'e mosaic ordering of adatoms increases the sheet resistance of graphene due to a gap opening in its spectrum and that critical fluctuations of the order parameter lead to a nonmonot…
Electrically conducting samples of polyaniline (PANI) were prepared by doping with dodecylbenzene sulfonic acid (DBSA) using a thermal doping method without the application of shear. Besides characterizing the samples using optical microscopy, SEM, UV‐vis‐NIR, the degree of doping and the electrical conductivity were…
Abstract Novel silver/polymer composites based on thiol‐ene chemistry are prepared by an in situ bottom‐up approach. The in situ synthesis of silver particles inside the polymer matrix is achieved in one pot by photoreduction reaction in presence of a silver precursor and the concurrent crosslinking reaction. XPS anal…
Abstract Rheological properties of cotton pulp dissolved in 1‐butyl‐3‐methylimidazolium chloride ([Bmim]Cl) solutions were characterized using an advanced rheometer. The complex viscosity, dynamic modulus, and shear viscosity at different temperature were studied. In the steady shear measurements, all the solutions sh…
An off-the-shelf vascular graft biomaterial for vascular bypass surgeries is an unmet clinical need. The vascular biomaterial must support cell growth, be non-thrombogenic, minimize intimal hyperplasia, match the structural properties of native vessels, and allow for regeneration of arterial tissue. Electrospun recomb…
In this paper, the transient overvoltage suppression capability and harmonic filtering performance of C-type 2nd harmonic filters (HFs) are optimized by using two-stage damping resistors; one is permanently connected to the filter circuit, while the other one is switched on by back-to-back connected thyristors during…
Volume is indexed by Thomson Reuters BCI (WoS).This second Special Topic edition follows the success of the first one: edited and published by TTP in 2008. It is intended to communicate the latest progress and research advances made in the theory, research and development of MSMMs. It comprises a collection of fifteen…
Abstract Characterization of the material mechanical behavior at sub‐Hopkinson regime (0.1 to 1 000 s −1 ) is very challenging due to instrumentation limitations and the complexity of data analysis involved in dynamic loading. In this study, AZ31 magnesium alloy sheet specimens are tested using a custom designed servo…
In this paper we report the first in situ atomic force microscopy study on the crystal growth of zincophosphate-faujasite (ZnPO-FAU). Results show that growth at low to moderate supersaturation conditions takes place by a birth-and-spread and/or spiral growth mechanism. At medium-to-high supersaturation conditions, gr…
Lead sulfide nanowires with controllable optoelectronic properties would be promising building blocks for various applications. Here, we report the hot colloidal synthesis of radically branched and zigzag nanowires through self-attachment of star-shaped and octahedral nanocrystals in the presence of multiple surfactan…
A facile and universal synthetic approach for preparing superlattice nanowire (SLNW) arrays is developed. In this method, two kinds of elements are alternately electrodeposited into the holes of the anodic alumina oxide (AAO) template, automatically in separate electrolytes by a programmed device. This method is not r…
AFM is used to characterize sodium poly(styrene sulfonate) (PSS) layers physisorbed from NaCl solutions with an ionic strength ranging between 0 and 1 M NaCl. Colloidal probe tapping mode imaging shows that domains of PSS salted brushes coexist with flatly adsorbed PSS. The brush area fraction increases with rising de…