Materials Literature
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Multiwalled carbon nanotubes (MWCNTs) were functionalized with two types of chemical moieties (i.e. carboxylic, COOH and hydroxyl benzoic acid groups, ‐HBA) on their sidewalls in order to improve their interaction with a liquid crystalline polymer (LCP) and dispersion in LCP. We have investigated the rheological, mec…
Abstract Linear, one‐binding‐site or two‐binding‐site (N + ) organifiers with two hydroxyl end groups were synthesized, and novel organoclays were prepared through a cation‐exchange reaction between pristine sodium montmorillonite and the synthesized organifiers. After sonication of the as‐prepared organoclay in N,N ′…
Abstract The article deals with the melting and nonisothermal crystallization behavior of neat poly (phenylene sulphide) (PPS) and its composites with a thermotropic liquid crystalline polymer (TLCP)—Vectra A950, prepared by melt mixing and probed by differential scanning calorimetry. The various macrokinetic models n…
In situ aberration-corrected high-resolution transmission electron microscopy is used to examine the structural transformations of carbon chains that occur in the interior region of carbon nanotubes. We find electron-beam irradiation leads to the formation of two-dimensional carbon structures that are freely mobile in…
The structural factors responsible for the extraordinary rate enhancement ( approximately 10(17)) of the reaction catalyzed by orotidine 5'-monophosphate decarboxylase (OMPDC) have not been defined. Catalysis requires a conformational change that closes an active site loop and "clamps" the orotate base proximal to hyd…
Abstract The following article from the Journal of Applied Polymer Science , “Mechanical and thermal properties enhancement of polycarbonate nanocomposites prepared by melt compounding” by Sanjay K. Nayak, Smita Mohanty, and Sushanta K. Samal, published online on 7 April 2010 in Wiley Online Library ( J. Appl. Polym.…
Abstract Novel carbon nanofiber (CNF) ‐filled bismalemide composites were fabricated by a thermokinetic mixing method. The thermal and mechanical properties of composites containing 1 wt % and 2 wt % CNFs were investigated. Thermogravimetric analysis demonstrated that minimal improvement in thermal stability of the na…
V(2)O(5) films capped by a thin ZnO layer had been prepared by sputtering method at room temperature. The initial smooth films transferred to porous composite nanocrystals and nanorods after annealed at 500 degrees C, and enhanced visible light emission was observed. This tremendous enhancement was attributed to the c…
Abstract Biodegradable hyperbranched poly(ester amide) (HBP) was used as a compatibilizer to modify PLA/SiO 2 nanocomposites for the first time. The ternary composites displayed dramatically improved mechanical properties including excellent toughness and fairly high stiffness. TEM images revealed that an encapsulatio…
This paper describes a water-based protocol that provides a simple, convenient, and environmentally benign route to the synthesis of Au octahedra. Specifically, we obtained single-crystal Au octahedra (ca. 85% of the product) with an edge length of 32.4+/-2.3 nm and singly twinned, truncated bipyramids (ca. 15%) by re…
Abstract A first inter‐laboratory comparison was conducted to demonstrate and document the capability of interested laboratories to measure the fraction of COH species on a plasma oxidised poly(propylene) sample by using a chemical derivatisation XPS approach. This report presents the results from that inter‐laborato…
Heat and moisture transport plays an important role in many engineering areas. In many sweat transport systems, such as clothing assembly, the moisture concentration (or sweat) is relative small and the air concentration reaches a steady state quickly. In this paper, a quasi-steady-state multi-component and multi-phas…
Abstract In this study, water was used as a coblowing agent in the carbon dioxide (CO 2 ) extrusion foaming process in a twin screw extruder. It enlarged cell size and thus lowered foam density for better thermal insulation. Different strategies have been studied including direct injection of water into the extruder w…
Abstract Two different alumina powders were dispersed in low‐density polyethylene (LDPE) to evaluate if any role can be ascribed to the crystalline phase, size and morphology of the alumina filler. In particular a submicrometric α‐alumina and a nanocrystalline transition (γ/δ) alumina were added to the polymer at 5 wt…
This paper presents a systematic approach to the multivariable robust control of a hybrid fuel cell gas turbine plant. The hybrid configuration under investigation comprises a physical simulation of a 300 kW fuel cell coupled to a 120 kW auxiliary power unit single spool gas turbine. The facility provides for the test…
We present our study of the effect of substrate induced strain on La(5/8-y)Pr(y)Ca(3/8)MnO(3) (y = 0.45) thin films grown on LaAlO(3), NdGaO(3) and SrTiO(3) substrates that show large scale phase separation. It is observed that unstrained films grown on NdGaO(3) behave quite similarly to bulk material but the strained…
Abstract Using glancing angle deposition by ion beam sputtering, sculptured thin films (STFs) consisting of various Si nanostructures of manyfold shapes, such as inclined and vertical columns, screws, and spirals, were deposited on Si substrates. It will be shown that morphology, shape, and diameter of the structures…
Abstract In this work, aligned and molecularly oriented bone‐like PLLA semihollow fiber yarns were manufactured continuously from an optimized homogeneous polymer‐solvent‐nonsolvent system [PLLA, CH 2 Cl 2 , and dimethyl formamide (DMF)] by a single capillary electrospinning via self‐bundling technique. Here, it shoul…
Abstract Hexamethylcyclotrisiloxane (D 3 ), octamethylcyclotetrasiloxane (D 4 ), and decamethylcyclopentasiloxane (D 5 ) were equilibrated with potassium tert ‐butoxide or triflic acid in bulk at 100 °C to elaborate the 1 H NMR and 13 C NMR spectra, SEC elution curve, and MALDI‐TOF (MT) mass spectrum of a fully equili…
Abstract Optimum processing conditions for the electrospinning of water‐soluble eggshell membrane (S‐ESM) were investigated. Two biocompatible polymers, poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA), were used to improve the processability of S‐ESM for electrospinning in aqueous media. Uniform nanofibers wi…