Materials Literature
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A new method to prepare polypropylene- graft -polystyrene copolymers with tailored structure has been developed. The ability of a series of copolymers with variable structure to compatibilize the polypropylene−polystyrene blends was evaluated through microscopic observation of the morphology of the blends. The synthes…
This study reports the novel synthesis of nano-sized cellular thin film with high degrees of crystallinity and purity using an electrochemical deposition of green rust 2 (GR2) and its further oxidation. This technique is applicable to substrates with large surface areas of a few square centimeters or more without the…
Abstract We demonstrate a cholesteric liquid crystal‐polymer dispersion where the liquid crystal is encapsulated via polymerization induced phase separation. A polymerizable additive formulation is used to control the liquid crystal droplet size. Encapsulation prevents the flow of liquid crystal thereby preserving the…
BACKGROUND AND PURPOSE: Intraoperative MR imaging (IMRI) has advantages over conventional framed and frameless techniques. IMRI, however, also has some drawbacks, especially related to interpretation of gadolinium-enhanced intraoperative imaging resulting from surgically induced blood brain barrier injury, vascular ch…
A new class of conjugated polyacetylenes having perylene bisimide units and pendant fullerene or porphyrin groups were synthesized and characterized. SEM images displayed the aggregation superstructures of two polymers. The poly( 5 0.1 - co - 4 0.9 ) can form a large quantity of spherical nanoparticles in chloroform b…
A thorough investigation of the adsorption and diffusion of Mg, O, and O(2) on MgO(001) terraces is performed by first-principles calculations. The single Mg adatom weakly binds to surface oxygens, diffuses, and evaporates easily at room temperatures. Atomic O strongly binds to surface oxygens, forming peroxide groups…
The key requirements of nanotube formation are an atomic carbon source and a source of nanometal particles. Carbon nanotubes (CNTs) have been synthesized by an argon/nitrogen microwave plasma torch using a mixture of acetylene and vapor-phase iron pentacarbonyl at the atmospheric pressure. The synthesized CNTs have be…
The crystal transition behavior of δ form syndiotactic polystyrene (sPS) in supercritical CO 2 was investigated in detail by using Fourier transform infrared spectroscopy and differential scanning calorimetry. The empty δ e form sPS was obtained after treating the δ form in supercritical CO 2 of 12 MPa in a range from…
A finite element method is presented to compute three-dimensional eddy current distributions in nonlinear laminated iron cores. In a first step, the core is assumed to have an anisotropic conductivity of zero value in the direction perpendicular to the laminations. In a second step, the eddy currents within the sheets…
Abstract The partial discharge (PD) activity during propagation of electrical treeing in epoxy resin is described. The electrical trees grew in needle‐plane samples without and with an internal barrier up to the final breakdown. The simultaneous tree growth and discharge activity show a correlation between the propaga…
Our previous work demonstrated that ethylenediamine-tetra-acetic acid (EDTA) markedly enhances the apparent activity of commercial xylanase and pectinase enzymes in cotton bioscouring, accelerating degradation and removal of impurities. In this study, we explore how EDTA can improve the efficiency of the enzyme proces…
Abstract The use of di‐2‐pyridyl ketone oxime (Hpko)/X – “blends” (X – = PhCO 2 – , N 3 – , NCO – , acac – , NCS – ) in zinc chemistry yields neutral tetranuclear and cationic pentanuclear clusters. Various synthetic procedures have led to the synthesis of compounds [Zn 4 (OH) 2 (O 2 CPh) 2 (pko) 4 ] · 3MeCN ( 1· 3MeC…
After an introduction regarding polymer blends, this review shows how the enhancement of the degree of compatibility between the constituent components of a polyblend can be made by using different reactive or additive compatibilizers. It also discusses how their presence affects the morphology and the properties of t…
This paper presents an open-celled foaming extrusion process with low-density polyethylene (LDPE) and LDPE/polystyrene (PS) blends. The basic strategy for achieving a high open-cell content was to induce a hard/soft melt structure with crosslinking and to foam this non-homogeneous melt structure. The hard sections for…
A TeO X -based inorganic photoresist was developed for mastering utilizing heat-mode recording. We discovered that the novel organic thermal isolation film markedly improved the patterning resolution of phase change mastering. We demonstrated Blu-ray Disc read only memory (ROM) mastering with a blue laser diode, using…
Abstract We have developed the first ever reflective cholesteric liquid crystal displays on single textile substrates made with simple coating processes. This paper reports on a novel approach for fabrication of ultra‐thin encapsulated cholesteric liquid crystal displays with transparent conducting polymers as bottom…
Photo-polymerisation of liquid crystalline di-acrylates is a very versatile method to produce homogeneously aligned polymer films. The orientation of the liquid crystals and hence the anisotropic optical properties of the films are frozen in by the photo-polymerisation process. Homogeneously aligned nematic liquid cry…
Highly anisotropic nanocrystallites in the form of nanoneedles and nanoplatelets of KNbO 3 perovskite were prepared by crystallization of the amorphous gel. The gel was prepared by the polymerizable-complex method based on the Pechini-type reaction route. The nanoneedles were typically 50 nm thick and approximately 10…
Abstract Solid oxide fuel cells are ceramic fuel cells that convert chemical into electrical energy at temperatures between 650 °C and 1000 °C. Today, this type of fuel cell is receiving ever‐increasing attention due to its principle capability to provide electricity from both fossil and renewable fuel sources. System…
The thermodynamics (temperature−concentration phase diagram), the crystal structure, and the morphology of systems prepared from syndiotactic polystyrene (sPS) in naphthalene, a solvent solid at room temperature, are reported. From the temperature−concentration phase diagram and from neutron diffraction investigations…