Hanyu Feng、Shu‐Hua Jian、Yunpu Wang 等 5 位作者1998-06-06Journal of Applied Polymer Science
Rare earth metal ions containing polymer ternary complexes were synthesized and characterized. The functional polymers investigated were polymer-bond triphenylphosphine (PBDP), polymer-bond triphenylarsine (PBDAs), polymer-bond triphenylstibine (PBDSb), and polymer-bond triphenylbismuthine (PBDBi) as polymer ligands.…
Analytical chemistry methods developmentAnalytical Chemistry and SensorsLanthanide and Transition Metal Complexes
A. Hebeish、Margarita Konstantinovna Beliakova、A. Bayazeed1998-06-06Journal of Applied Polymer Science
Graft copolymerization of methacrylic acid (MAA) onto starch using a potassium persulfate/sodium thiosulfate redox initiation system was investigated. Emphasis was placed on the promotion of graft formation while minimizing homopolymerization. This could be achieved through a thorough investigation into the major fact…
Microplastics and Plastic PollutionElectrospun Nanofibers in Biomedical Applicationsbiodegradable polymer synthesis and properties
Satoshi Nag�、Yukio Mizutani1998-06-06Journal of Applied Polymer Science
Microporous polypropylene sheets are prepared by biaxially stretching polypropylene sheets containing CaCO3 filler. Here, the stretching ratio is one of the most important factors in the preparative process, and removing the CaCO3 filler also affects the sheet properties. Their effects were studied in relation to the…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesPolymer crystallization and properties
Satoshi Nagõ、Yukio Mizutani1998-06-06Journal of Applied Polymer Science
Microporous polypropylene sheets are prepared by biaxially stretching polypropylene sheets containing CaCO3 filler. Here, the stretching ratio is one of the most important factors in the preparative process, and removing the CaCO3 filler also affects the sheet properties. Their effects were studied in relation to the…
biodegradable polymer synthesis and propertiesPolymer Nanocomposites and PropertiesPolymer crystallization and properties
John Lionel Simonsen、Rodney Jacobsen、Roger M. Rowell1998-06-06Journal of Applied Polymer Science
Styrene–maleic anhydride (SMA) copolymers containing either 7 or 14% maleic anhydride were filled with either pine flour or dry-process aspen fiber from a medium density fiberboard (MDF) plant. Material properties of the filled and unfilled SMA plastics were compared with those of aspen-fiber-filled and unfilled polys…
Material Properties and ApplicationsNatural Fiber Reinforced Composites
Eric M. Gullikson1998-06-05Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Measurements of nonspecular EUV scattering from Mo/Si multilayer coated mirrors have been performed. The surface power spectral density is deduced from the angular scattering distribution and in all cases is found to be in excellent agreement with surface profile measurements, by both optical and atomic force microsco…
Advancements in Photolithography TechniquesSurface Roughness and Optical MeasurementsElectron and X-Ray Spectroscopy Techniques
Nobuyuki Tomioka、Daisuke Takasu、T. Takahashi 等 4 位作者1998-06-05Angewandte Chemie
Je 32 Carboxylat- und Ammonium-Funktionalitäten ermöglichen die elektrostatische Wechselwirkung zwischen unterschiedlich geladenen dendritischen Elektrolyten und Porphyrinkernen, die in protischen Medien zu einem supramolekularen, fluoreszenzaktiven Aggregat mit vorausbestimmbarer Anordnung zweier kommunizierender Chr…
Dendrimers and Hyperbranched PolymersRNA Interference and Gene DeliveryLuminescence and Fluorescent Materials
Wolfgang von Rybinski、Karlheinz Hill1998-06-05Angewandte Chemie International Edition
A new generation of nonionic surfactants that are widely applicable and simultaneously ecologically compatible has been developed in the alkyl polyglycosides. Their production from the renewable resources glucose and fatty alcohol and their ultimate biodegradation into carbon dioxide, water, and assimilated bacterial…
Microbial bioremediation and biosurfactantsEnvironmental Chemistry and Analysisbiodegradable polymer synthesis and properties
Arnold Adam、Mathias Mehta1998-06-05Angewandte Chemie International Edition
The surprising accessibility of the title compound has enabled the first X-ray structural analysis of the hydrogen peroxocarbonate anion (shown on the right).
Inorganic Fluorides and Related CompoundsPolyoxometalates: Synthesis and ApplicationsMetal-Organic Frameworks: Synthesis and Applications
Darrell J. Irvine、Anne M. Mayes、Sushil K. Satija 等 6 位作者1998-06-05Journal of Biomedical Materials Research
Four different poly(ethylene oxide) [PEO] molecules were compared as grafted polymer layers for biomaterials' substrates: two linear polymers and two star polymers. Conditions maximizing surface coverage for each molecule were employed with the aim of inhibiting protein adsorption and increasing the density of end gro…
Polymer Surface Interaction StudiesElectrospun Nanofibers in Biomedical ApplicationsSurface Modification and Superhydrophobicity
R. R. Rye、F.G. Yost、Eoin O’Toole1998-06-05Langmuir
1-Heptanol flow in irregularly shaped surface grooves in Pd-coated Cu is shown to be an example of Poiseuille flow with simple Washburn kinetics of the form z 2 = C (γ/μ) t, where γ is the liquid surface tension, μ is the viscosity, and C is a function of the groove dimensions and the contact angle θ. A shape independ…
Fluid Dynamics and Thin FilmsSurface Modification and SuperhydrophobicityAdhesion, Friction, and Surface Interactions
Matthias Conrad、Frank Krumeich、Bernd Harbrecht1998-06-05Angewandte Chemie International Edition
Diffractograms with twelvefold rotational symmetry (depicted on the right) were obtained from the first quasicrystalline chalcogenide Ta1.6Te. This compound was prepared on a preparative scale by the reduction of TaTe2 with tantalum below 1870 K. This tantalum-rich telluride, which is the first stable dodecagonal phas…
Inorganic Chemistry and MaterialsCrystal Structures and PropertiesQuasicrystal Structures and Properties
Maziar Nekovee、W. M. C. Foulkes、A. J. Williamson 等 5 位作者1998-06-05arXiv
We present a new method for realizing the adiabatic connection approach in density functional theory, which is based on combining accurate variational quantum Monte Carlo calculations with a constrained optimization of the ground state many-body wavefunction for different values of the Coulomb coupling constant. We us…
Materials ScienceStrongly Correlated Electrons
U. Rohr、P. Schlichting、A. Böhm 等 7 位作者1998-06-05Angewandte Chemie International Edition
Tempering of polystyrene films containing the novel liquid crystalline coronenebis(dicarboximide)s 2, which are formed by an easy route from perylene-3,4;9,10-tetracarboxylic dianhydride (1), leads to a shift of the emission within a few seconds. This could be used for dot-by-dot coloring and thus optical displays. Th…
Silicone and Siloxane ChemistrySynthesis and properties of polymersLuminescence and Fluorescent Materials
M. A. Novotny、G. Brown、P. A. Rikvold1998-06-05arXiv
We present Monte Carlo and Langevin micromagnetic calculations to investigate thermal switching of single-domain ferromagnetic particles. For the Monte Carlo study we place particular emphasis on the probability that the magnetization does not switch by time t. We find that this quantity has different behaviors in dif…
Materials Sciencecond-mat.stat-mech
M. A. Novotny、P. A. Rikvold1998-06-05arXiv
We present an overview of the subject of Magnetic Particles, starting at a level suitable for advanced high-school students and ending at a level suitable for current practitioners in the field. The sub-topics covered include: Types of Magnetic Materials, Relationships Between the Vector Fields, Magnetic Energies, Dyn…
cond-mat.stat-mechMaterials Science
Mangilal Agarwal、Kurt W. Koelling、Jeffrey J. Chalmers1998-06-05Biotechnology Progress
Polylactic acid (PLA) polymer film was degraded in abiotic and biotic environments to understand the role of microbes in the degradation process of lactic acid based polymers. The degradation studies were conducted in a well-characterized biotic system, an abiotic system, a sterile aqueous system, and a desiccated env…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic Pollution
Francesco Sette、M. Krisch、C. Masciovecchio 等 5 位作者1998-06-05OpenAlex
The development of inelastic x-ray scattering with millielectron volt energy resolution at the European Synchrotron Radiation Facility in Grenoble, France, provides a method for studying high-frequency collective dynamics in disordered systems. This has led to the observation of propagating acoustic phonon-like excita…
Material Dynamics and PropertiesTheoretical and Computational PhysicsGlass properties and applications
Wolfgang von Rybinski、Karlheinz Hill1998-06-05OpenAlex
A new generation of nonionic surfactants that are widely applicable and simultaneously ecologically compatible has been developed in the alkyl polyglycosides. Their production from the renewable resources glucose and fatty alcohol and their ultimate biodegradation into carbon dioxide, water, and assimilated bacterial…
biodegradable polymer synthesis and propertiesMicrobial bioremediation and biosurfactantsEnvironmental Chemistry and Analysis
Hirohisa Nagatani、Hitoshi Watarai1998-06-04Analytical Chemistry
The equilibrium and kinetics of the protonation of 5,10, 15,20-tetraphenylporphyrin (H 2 TPP) and the demetalation of 5,10,15,20-tetraphenylporphyrinatozinc(II) (ZnTPP) at a dodecane−aqueous acid interface were investigated by means of a new in situ spectrophotometric method, the centrifugal liquid membrane method, wh…
Porphyrin and Phthalocyanine ChemistrySurfactants and Colloidal SystemsElectrochemical Analysis and Applications