H. Yıldırım Erbil、Banu Yaşar、Şefik Süzer 等 4 位作者1997-10-01Langmuir
The surface composition and free energy properties of two grades of amphiphilic and semicrystalline triblock copolymers consisting of a poly(dimethylsiloxane) (PDMS) midblock ( M w ∼ 2300) coupled to poly(ε-caprolactone) (PCL) end blocks having differing molecular weights ( M w ∼ 2000, sample P3, and M w ∼ 3000, sampl…
Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsPolymer Surface Interaction Studies
Hanne B.Aa. THEILGAARD、Klaus Nyegaard Kristiansen、Claus Maxel Henriksen 等 4 位作者1997-10-01Biochemical Journal
delta-(L-alpha-Aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS) from Penicillium chrysogenum was purified to homogeneity by a combination of (NH4)2SO4 precipitation, protamine sulphate treatment, ion-exchange chromatography, gel filtration and hydrophobic interaction chromatography. The molecular mass of ACVS was e…
Enzyme Structure and FunctionEnzyme Production and CharacterizationPhytase and its Applications
S. D�silets、S. Villeneuve、M. Laviolette 等 4 位作者1997-10-01Journal of Polymer Science Part A Polymer Chemistry
Chemical structure investigations of polyurethane binders based on difunctional linear glycidyl azide polymer (GAP) cured with isophorone diisocyanate (IPDI) were performed using 13C-NMR spectroscopy in solution. Chemical functions such as urethane, urea, allophanate, and biuret were all expected to be detected in the…
Polymer composites and self-healingEpoxy Resin Curing ProcessesSynthesis and properties of polymers
J. M. Meseguer Due�as、A. Vidaurre Garayo、F. Romero Colomer 等 6 位作者1997-10-01Journal of Polymer Science Part B Polymer Physics
The structural relaxation process in styrene-acrylonitrile copolymer has been characterized by means of differential scanning calorimetry (DSC) experiments. The results in the form of heat capacity, cp(T), curves are analyzed using a model for the evolution of the configurational entropy during the process recently pr…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesThermal and Kinetic Analysis
Sharon Xin Lu、Peggy Cebe、Malcolm Capel1997-10-01Macromolecules
We report a study of the effects of molecular weight on the structure and properties of poly(phenylene sulfide), PPS, crystallized from the rubbery amorphous state at temperatures just above the glass transition. PPS films were characterized using temperature-modulated differential scanning calorimetry (MDSC), small a…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesFiber-reinforced polymer composites
Jooho Moon、Jeffrey A. Kerchner、James LeBleu 等 5 位作者1997-10-01Journal of the American Ceramic Society
An approach to fabricate lead titanate (PbTiO 3 ) films with preferred orientation on arbitrary substrates by a sol‐gel method was developed. To ensure a preferred crystallographic orientation on the substrates with different crystal structure, well‐defined platelet PbTiO 3 particles were used as seeds. Because the ba…
Ferroelectric and Piezoelectric MaterialsAerogels and thermal insulationElectrophoretic Deposition in Materials Science
Andrzej Rajca、Kan Lu、Suchada Rajca1997-10-01Journal of the American Chemical Society
Annelated triple-calix[4]arene-based tetradecaether 1- (OMe) 14 is synthesized. Its three isomers, 1X- (OMe) 14, 1Y-(OMe) 14, 1Z-(OMe) 14, are isolated and characterized. The corresponding triarylmethyl carbopolyanion is prepared and oxidized to polyradical 1 . SQUID magnetometry for 1 in THF- d 8 /2-MeTHF gives S = 6…
Molecular Sensors and Ion DetectionMagnetism in coordination complexesLuminescence and Fluorescent Materials
F. M. Houlihan、Thomas I. Wallow、Omkaram Nalamasu 等 4 位作者1997-10-01Macromolecules
A series of novel cycloolefin−maleic anhydride copolymers have been prepared and evaluated for 193 nm imaging applications. Free radical induced copolymerization of norbornene and maleic anhydride affords a hydrolytically robust alternating copolymer. Aqueous base solubility can be induced via incorporation of acrylic…
Semiconductor materials and devicesMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques
Shunji Bandow1997-10-01Japanese Journal of Applied Physics
The thermal expansion in the radial direction (stacking axis of graphene sheets) of multiwall carbon nanotubes (MWNTs) is measured in the temperature range from 10 to 320 K. The sample includes in excess of 85% by weight of MWNTs. The radial thermal expansion of MWNTs is found to be almost the same with the c -axis th…
Carbon Nanotubes in CompositesGraphene research and applicationsThermal properties of materials
M. Auger、V.K. Sarin1997-10-01Surface and Coatings Technology
Adherent crystalline mullite coatings have been chemically vapor deposited on SiC and Si3N4-based substrates to enhance its corrosion/ oxidation resistance. Thermodynamic and kinetic considerations have been utilized to produce mullite coatings with a variety of growth rates, compositions, and morphologies. The flexib…
Advanced ceramic materials synthesisMXene and MAX Phase MaterialsAdvanced materials and composites
Hans Jürgen Grabke1997-10-01Materials science forum
L'oxydation de NiAl, FeAl, et TiAl ainsi que celle d'alliages de composes intermetalliques ont ete largement etudiees dans les dernieres annees. A haute temperature, on observe la formation selective de AlO 3 dans NiAl et FeAl, tandis qu'a plus basse temperature, on trouve des modifications metastables. Dans le presen…
Catalytic Processes in Materials ScienceIntermetallics and Advanced Alloy Properties
Tiehua Piao、Su‐Moon Park1997-10-01Journal of The Electrochemical Society
Passivation and its transpassive breakdown reactions of stainless steel in neutral sodium chloride solutions have been studied using cyclic voltammetric and spectroelectrochemical experiments. The results indicate that the main chemical reactions of the passivation process are those involved in iron oxidation to vario…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsElectrochemical Analysis and Applications
Albert Escuer、Isabel Castro、Franz A. Mautner 等 5 位作者1997-10-01Inorganic Chemistry
The nickel(II) dinuclear 1,3-azido-bridged compound (&mgr;-N(3))(2)[Ni(222-tet)](2)(BPh(4))(2) (1) and the trinuclear compounds (&mgr;-N(3))(3)[Ni(3)(222-tet)(3)](PF(6))(3) (2) and (&mgr;-N(3))(3)[Ni(3)(222-tet)(3)](ClO(4))(3) (3) were synthesized and characterized. 222-tet is the tetraaminate ligand triethylenetetram…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
Arnd Vogler、Horst Kunkely1997-10-01Comments on Inorganic Chemistry
Charge transfer (CT) transitions of coordination compounds of transition, main group, and f-block metals are classified according to the redox sites at the metals and ligands: ligand-to-metal (LMCT), metal-to-ligand (MLCT), metal-to-metal (MMCT), ligand-to-ligand (LLCT) and intraligand (ILCT), The energy of these CT t…
Molecular Sensors and Ion DetectionCrystallography and molecular interactionsLuminescence and Fluorescent Materials
Junji Tominaga、Takashi Kikukawa、Makoto Takahashi 等 4 位作者1997-10-01Journal of Applied Physics
The structure of the optical phase change memory alloy, silver–vanadium–indium–antimony–tellurium (AVIST), has been investigated by the methods of optical reflectivity change, Raman spectroscopy, and electron diffraction. In order to identify each phase, Sb, AgSb, AgSbTe, and AgInTe films were also studied. The Raman…
Chalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenidesNonlinear Optical Materials Studies
Maher A. Alodan、William H. Smyrl1997-10-01Journal of The Electrochemical Society
Localized attack on aluminum alloy 2024 in the presence of 0.1 M KCl was investigated using fluorescence microscopy. The study was conducted by high resolution confocal laser scanning microscopy in an in situ fluorescence mode. Fluorescein dye was used to indicate pH changes and surface chemistry over and around the a…
Corrosion Behavior and InhibitionForce Microscopy Techniques and ApplicationsThermography and Photoacoustic Techniques
C. S. Wang、Martin R. Bryce、Andrei S. Batsanov 等 4 位作者1997-10-01Chemistry - A European Journal
Abstract The pyrazinoporphyrazine system 13 (metal‐free, zinc and copper derivatives) has been synthesised by tetramerisation of 2,3‐dicyanopyrazine monomer unit 10 . The structure of 13a‐c has been established by 1 H NMR spectroscopy, UV/Vis spectrophotometry, MALDI‐TOF mass spectrometry, cyclic voltammetry and diffe…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryOrganic and Molecular Conductors Research
Keigo Aoi、Aki Motoda、Masahiko Okada 等 4 位作者1997-10-01Macromolecular Rapid Communications
Abstract Novel linear polymer/dendrimer block copolymers, poly(2‐methyl‐2‐oxazoline)‐ block ‐poly(amido amine) dendrimers (water‐soluble full‐generation type 4 ( G = 4.0 and 5.0) and amphiphilic half‐generation type 5 ( G = 3.5, 4.5, and 5.5)), were synthesized by divergent‐growth dendrimer construction with ω‐ethylen…
Advanced Polymer Synthesis and CharacterizationSynthetic Organic Chemistry MethodsDendrimers and Hyperbranched Polymers
Andrey L. Rogach、Г. П. Шевченко、Zinaida M. Afanas'ev 等 4 位作者1997-10-01The Journal of Physical Chemistry B
The influence of the UV irradiation on the morphology and optical properties of nanosize colloidal silver particles formed in the poly(vinyl alcohol) matrix containing Ag + and formic acid was investigated. Formation of both filament and ultrafine silver particles accompanied by a strong blue shift of the silver plasm…
Gold and Silver Nanoparticles Synthesis and ApplicationsPigment Synthesis and PropertiesLaser-Ablation Synthesis of Nanoparticles
Toshiyuki Hibino、Atsumu Tsunashima1997-10-01Chemistry of Materials
Highly ordered paramolybdate (Mo 7 O 24 6 - ) intercalates of hydrotalcite-like compounds (HTlcs) were obtained through anion exchange performed on well-crystallized parent HTlcs in an ethanol/water solution. Aqueous solutions of paramolybdate are acidic, causing hydrolysis of HTlcs, but we found that an ethanol/water…
Supercapacitor Materials and FabricationLayered Double Hydroxides Synthesis and ApplicationsInorganic Chemistry and Materials