Materials Literature
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Abstract The thermal degradation behavior of banana fiber and polypropylene/banana fiber composites has been studied by thermogravimetric analysis. Banana fiber was found to be decomposing in two stages, first one around 320°C and the second one around 450°C. For chemically treated banana fiber, the decomposition proc…
The manuscript describes a novel method to fabricate a thin composite film based on spin coating in which surface plasmon bands of Au and Ag nanoparticles are effectively coupled with each other because of position-selective deposition of both nanoparticles on a self-assembled block copolymer structure. Simple solutio…
With properly encoded recognition sites and a well-defined algorithm for intermolecular and intramolecular interactions, the 120 degrees spacer linked ditopic hydrazide-based supramolecular synthons were found to self-assemble into shape-persistent cyclic hexamers in apolar solvents. The two hydrazide motifs displayed…
Poled multilayer capacitors based on barium titanate represent model magnetoelectric systems because the interdigitated planar electrodes are nowadays based on a magnetostrictive material, namely nickel. Here we demonstrate electrically excited mechanical resonances that can be magnetically tuned. Nonmonotonic variati…
Abstract Polyamide 6/polypropylene (PA6/PP = 70/30 parts) blends containing 4 phr (parts per hundred resin) of organophilic montmorillonite (OMMT) were prepared by melt compounding. The sodium montmorillonite (Na‐MMT) was modified using three different types of alkyl ammonium salts, namely dodecylamine, 12‐aminolauric…
Detailed understanding of interaction between biomolecules and single-walled carbon nanotubes (SWCNTs) is important in the design and applications of biosensors that employ SWCNTs for transduction of the analytes response. Reciprocal interactions of SWCNT with bovine serum albumin are investigated here with pristine a…
Bundles of nanotubes have been exfoliated in solution by handful of dispersants, such as surfactants, polymers, or proteins, for efficient use in various applications. Common procedures in carbon nanotube exfoliation and dispersion are sonication followed by centrifugation. The dispersion dynamics of single-walled car…
PVC/nano CaCO 3 composites were prepared on Brabender Plasticorder. For comparison purposes, commercial CaCO 3 composites were also prepared. Characterization of the nano CaCO 3 and nanocomposites were done using scanning electron microscope (SEM) and transmission electron microscope (TEM). Their mechanical and therma…
Abstract Three series of isocyanate‐reactive waterborne polyurethane adhesives were prepared with various contents of chain extender (4.25/8.25/12.50 mol %) and polyol (20.75/16.75/12.50 mol %). Each series had a fixed amount of excess (residual) NCO group (0.50–2.00 mol %). FTIR and 1 H‐NMR spectroscopy identified th…
We study the combined effect of elastic anisotropy and disorder on the microstructure and thermodynamic behavior in alloys undergoing a martensitic transformation. Within a Ginzburg-Landau free-energy framework we find the region in the parameter space where a ferroelastic glassy state exists without twinning. We find…
Abstract Bionanocomposite hybrids based on poly(butylene adipate‐ co ‐terephthalate) (PBAT) and layered silicates were prepared by melt interaction technique using corotating twin screw extruder having a blown film unit. Sodium montmorillonite (Na + MMT) along with three different commercially available nanoclays i.e.…
The paper reports on the use of the Lorentz-Drude model to investigate the optical behavior of a novel multilayer localized surface plasmon resonance (LSPR) interface. The plasmonic interface consists of a random array of gold nanostructures (Au NSs) formed by thermal deposition of a 4 nm thick gold film on glass, pos…
Electron-energy-loss spectroscopy is used to map composition and electronic states in epitaxial La2/3Ca1/3MnO3 (LCMO) films of various thicknesses grown on SrTiO3 (001) and (110) substrates. For relatively thick films (≥20 nm), epitaxial tensile strain in (001) films promotes a compositional La/Ca gradient across the…
Arrays of parallel connected coaxial multiwall-carbon-nanotube–amorphous-silicon solar cells are fabricated. In this configuration, orthogonalization of the directions of light absorption and charge-carrier collection is realized. Under simulated solar illumination (AM 1.5 G), the short-circuit current of our carbon-n…
Abstract Surface‐carboxylated nano‐TiO 2 was used to prepare poly (vinyl alcohol) (PVA) nanocomposites to improve the dispersity of nano‐TiO 2 particles in PVA and to enhance the interaction between nanofiller and matrix. The effects of the extents of carboxylation and carboxylated nano‐TiO 2 loading on mechanical pro…
This letter reports an experimental and theoretical study on the electrical properties of carbon nanotube/glass fiber composites. Experimental measurements on unidirectional glass fiber composites with nanotubes dispersed in the polymer matrix show a high degree of anisotropy. The composites, manufactured with a vacuu…
Gold plated: Gold–silver alloy nanoplates (see image) with out-of-substrate orientation are synthesized on large-area supports by growth of silver nanoplates on gallium arsenide wafers followed by an overgrowth and alloying process. The surfaces of the nanoplates are highly exposed to the surrounding environment, thus…
Strain-induced modification of magnetic properties of lightly hole doped epitaxial LaCoO3 thin films on different substrates were studied with variable temperature magnetic force microscopy (MFM). Real space observation at 10 K reveals the formation of the local magnetic clusters on a relaxed film grown on LaAlO3 (001…
Well-defined core−shell bishydrophilic cylindrical polymer brushes (CPBs) with a poly(2-hydroxyethyl methacrylate) (PHEMA) core and a poly(oligo(ethylene glycol) methacrylate) (POEGMA) shell were synthesized via the combination of anionic polymerization and atom transfer radical polymerization. They were used as a uni…
Abstract The effects of fiber diameter and activation temperature on the pore characteristics of polyacrylonitrile based activated carbon nanofibers are investigated. It was found that lower fiber diameters as well as higher activation temperatures lead to a higher weight loss, specific surface area and total pore vol…