Materials Literature
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We report here the measurement of the magnetocaloric effect in a magnetic material with the use of noncontact type detection. The technique is based on the thermoacoustic principle. A sample with a periodically changing surface temperature induces exponentially decaying pressure waves which can be detected by a sensit…
An electrochemical route to poly(p-phenylenevinylenes)(PPVs) is described which involves cathodic cleavage of bis(dibromomethyl)arenes at a mercury pool cathode. Insoluble and organosoly PPVs are obtained in good yields and are characterised as regular and linear. Copolymers are obtained by co-electrolysis of differen…
The behavior and the effect of Al4SiC4, an excellent hydration-resistant compound, as an antioxidant for carbon-containing refractories have been investigated, and the corresponding mechanisms have been discussed. Al4SiC4 added to the refractories initially reacts with CO to form Al2O3, SiC and C. After the reaction,…
The surface chemical features and sintering behaviour of two preparations of tetragonal zirconia (t-ZrO2) stabilized with 3 mol % Y2O3 have been examined, and have been compared with those of a 2 mol% t-ZrO2 preparation and a monoclinic zirconia (m-ZrO2) preparation.The adsorption of CO2 indicates that the most peculi…
Hybrid structures have been applied in many areas such as textiles and composites. However, the mechanisms giving rise to the advantages associated with fiber blending, presumably due to the interactions between constituents of different types, are still poorly understood. This work is an attempt to look into the inte…
The use of the sol–gel synthesis method has been extended to include the preparation of stannates and antimonates from a citrate precursor. Samples of SrLaFeSnO6 and Sr2FeSbO6 have been prepared in a few hours. The structural and magnetic properties of the former are compared with those of a sample prepared over a per…
Results are reported of studies into some of the properties and forming behaviour of wood-polymer composite materials produced from natural wood by thermochemical manufacturing processes. The physico-mechanical properties, the moisture resistance, the bioresistance, the fire-resistance, and other operating properties…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtomic force microscopy and high-resolution scanning electron microscopy study of the banded surface morphology of hydroxypropyl cellulose thin filmsSoumya S. Patnaik, Timothy J. Bunning, W. Wade Adams, J. Wang, and M. M. LabesCite this: Macromolecules 1995, 28, 1, 393–395Pu…
, Lewis Acid-Promoted Anionic Polymerization of a Monomer with High Cationic Polymerizability. Synthesis of Narrow Molecular Weight Distribution Polyoxetane and Polyoxetane-Poly(methyl methacrylate) Block Copolymer with Aluminum Porphyrin Initiators
Reaction diffusion in the Mg–Cu system has been investigated by an electron-probe microanalyzer. Two kinds of intermetallic compounds Mg2Cu and MgCu2 in the Mg–Cu diffusion couples were observed in the temperature range from 683 to 748 K. The Mg2Cu phase layer grows faster than MgCu2 phase layer. The growth rate of th…
The first examples of phthalocyanine linear mainchain polymers showing liquid crystal properties are described.
The deposition of platinum on various carbon blacks has been carried out by forming active functional groups on the surface of the carbon support, and exchanging these active groups with different platinum complexes. Using H2PtCl6 solution, an aggregation rather than an exchange takes place. In this case, the anionic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and Defects in Sanidic Liquid Crystalline Polymers. 1I. G. Voigt-Martin, P. Simon, S. Bauer, and H. RingsdorfCite this: Macromolecules 1995, 28, 1, 236–242Publication Date (Print):January 1, 1995Publication History Published online1 May 2002Published inissue 1 Janu…
Publisher Summary This chapter describes that the structure and properties of the wood fiber-polymer matrix interphase play a major role in determining the mechanical and physical properties of the composite material. The interphase or adhesion between the fiber and the matrix has little effect on the composite stiffn…
Leishmania are obligate intracellular parasites, responsible for leishmaniasis. Leishmaniasis are transmitted via insect vector to vertebrate hosts including humans. The infection was reproduced in vitro with promastigotes which can infect murine resident peritoneal cells. Amphotericin B was incorporated into poly(D,…
The adhesion of Diamond-Like Carbon (DLC) films on Poly(ethyleneterephthalate) (PET) sheet has been characterised by tensile testing, using simple equipment. Three theoretical analyses of the tensile test are described, and their validity has been studied by calculating in three different ways the adhesion of the same…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Amorphous Boron Nitride from the Reaction of Haloborazines with Alkali Metals and Formation of a Novel Tubular Morphology by Thermal AnnealingEwan J. M. Hamilton, Shawn E. Dolan, Charles M. Mann, Hendrik O. Colijn, and Sheldon G. ShoreCite this: Chem. Mater. 1…
Stress-relieved steel wire for prestressed concrete (PC Wire), which is produced with cold drawing, has a higher resistance to delayed fracture than steel bar for prestressed concrete (PC Bar), which is produced with heat treatment. However, the hydrogen occlusion behavior of PC Wire has not been investigated yet. To…
We measured airborne releases of 14 C from the Paks Pressurized Water Reactor (PWR) Nuclear Power Plant (NPP). Two continuous stack samplers collect 14 C in 14 CO 2 and 14 C n H m chemical forms. 14 C activities were measured using two techniques; environmental air samples of lower activities were analyzed by proporti…
A class of biodegradable polymers, poly (phosphoesters), was studied for its potential as a matrix for controlled drug delivery. The degradability of the phosphorus ester linkage and the versatility of phosphorus-containing polymers make poly (phosphoesters) attractive candidates for development as a degradable biomat…