Materials Literature
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We describe LINUS, a hierarchic procedure to predict the fold of a protein from its amino acid sequence alone. The algorithm, which has been implemented in a computer program, was applied to large, overlapping fragments from a diverse test set of 7 X-ray-elucidated proteins, with encouraging results. For all proteins…
Abstract Investigation of the effects of an interfacial modifier on the rheological behavior of binary high‐density polyethylene (HDPE) composites showed that the interfacial modifier significantly changed the melt state behavior of HDPE/carbon black (CB) composites. This suggests that the interfacial adhesion between…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Induced Evolution of Chlorine-Containing Precursors in Impregnated Pd/Al2O3 CatalystsCristian Contescu, Dan Macovei, Constantin Craiu, Cristian Teodorescu, and James A. SchwarzCite this: Langmuir 1995, 11, 6, 2031–2040Publication Date (Print):June 1, 1995Publication…
Abstract Four biofiber materials were compared against wood flour for their ability to act as reinforcing fillers in melt‐blended composites with polypropylene as the matrix polymer. The four materials were a waste wood composite (mixture of plywood, particleboard, and fiberboard), kenaf core, a waste jute–polyester c…
Abstract Model composites consisting of glass beads dispersed in a matrix of nylon 6 with different degrees of interfacial adhesion were prepared. The effects of interfacial adhesion on damage generation in the glass bead filled nylon 6 were studied by acoustic emission monitoring and scanning electron microscopy, and…
The effect of recasting, up to four times, non precious Ni-Cr and Co-Cr commercial dental alloys on their corrosion behaviour in saliva and saline media was carried out. A potentiokinetic technique was utilised to analyse the electrochemical characteristics of the anodic polarisation curves of these alloys. A consider…
Abstract Distributions of stress and strain in composite and cellular materials can differ significantly from the predictions of classical elasticity. For example, concentration of stress and strain around holes and cracks is consistently less than classical predictions. Generalized continuum theories such as micropol…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Characterization of 2-Hydroxyethyl Methacrylate/Styrene Block Copolymers by Transmission Electron Microscopy Observation and Contact Angle MeasurementKazuhisa Senshu, Shuzo Yamashita, Mitsunori Ito, Akira Hirao, and Seiichi NakahamaCite this: Langmuir 1995, 11, 6, 22…
"Standardless" procedures for quantitative electron probe X-ray microanalysis attempt to eliminate the need for standardization through calculation of standard (pure element) intensities. Either "first principles" calculations, which account for all aspects of X-ray generation, propagation, and detection, or "fitted s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of the First Redox-Active Organometallic Polymers Containing Cyclosiloxanes as FrameworksCarmen M. Casado, Isabel Cuadrado, Moises Moran, Beatriz Alonso, Francisco Lobete, and Jose LosadaCite this: Organometallics 1995, 14, 6, 2618–2620Publication Date (Print):June…
Conformational and thermodynamic properties of polymer chains end-grafted to cylindrical and spherical surfaces under good solvent conditions have been studied using the single-chain mean-field theory. We have considered chains of 50, 100, and 150 segments, and five different radii from R=2 up to R=100. We have found…
Abstract Polymers with dendritic structure are a category of macromolecular architectures that has received considerable attention in the last decade. These polymers, also referred to as dendrimers, exhibit a degree of branching equal to unity. Interest in dendrimers whose branching points are linked to each other by…
Abstract Two procedures to derive all types of sphere packings with three contacts per sphere are described. 52 such types have been found. They are characterized by their shortest meshs and related to Wells' three-connected nets, if possible. It is proved that there exists no sphere packing with contact number three…
The glow discharge treatment of wool in nonpolymerizing gases like air, oxygen, and nitrogen is presented as a new zero-AOX pretreatment for shrinkproofing wool top and fabric. Modification of the wool fibers is restricted to the outer 30-50 nm, and consists of plasma etching and surface oxidation. The former is respo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNucleation and Anisotropic Growth of Lamellar Microdomains in Block CopolymersTakeji Hashimoto and Naoki SakamotoCite this: Macromolecules 1995, 28, 13, 4779–4781Publication Date (Print):June 1, 1995Publication History Published online1 May 2002Published inissue 1 June 1995h…
Abstract Tetramethylphosphonium-smectite (TMP-clay) and tetramethylammonium-smectite (TMA-clay), were prepared and characterized as adsorbents for a series of aromatic and chlorinated hydrocarbons. The sorption of benzene, alkylbenzenes, and carbon tetrachloride as vapors and as solutes from water was studied to evalu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolarized X-ray Absorption Spectroscopy of Cupric Chloride DihydrateIngrid J. Pickering and Graham N. GeorgeCite this: Inorg. Chem. 1995, 34, 12, 3142–3152Publication Date (Print):June 1, 1995Publication History Published online1 May 2002Published inissue 1 June 1995https://…
The problem of the distribution of the misorientation angle for symmetric randomly oriented objects is solved. It concerns, in particular, the crystallites in polycrystalline materials. The solution is the reference point for materials with nonrandom orientation distribution of crystallites and no correlations between…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDioxoporphyrins as Supramolecular Building Blocks: Oligomer Synthesis via Preassembly on a Ligand TemplateDuncan W. J. McCallien and Jeremy K. M. SandersCite this: J. Am. Chem. Soc. 1995, 117, 24, 6611–6612Publication Date (Print):June 1, 1995Publication History Published on…
Abstract The main surface treatments of materials (metals and plastics in particular) to be joined are presented. It is observed that these treatments modify the roughness, morphology, and chemical composition of the surface. As a result of these operations, the substrate surface energy is generally increased. A corre…