0000000000240106

AUTHOR

Pavel Strunz

showing 3 related works from this author

Structural investigation of hybrid nanocomposites

2002

Ultra small (USANS) and small angle neutron scattering (SANS) techniques were employed to study an elastomer styrene–butadiene, where two kinds of silica fillers have been added in different amounts. Small silica-particle fillers are expected to modify morphological and mechanical properties when dispersed in the copolymer matrix. The USANS and SANS techniques can span a wide range of momentum transfer, investigating morphological properties of the filled elastomer over a number of decades in length scale. Surface and mass fractal behavior has been observed over different length scales.

Length scaleMaterials scienceNanocompositeMomentum transferGeneral ChemistryElastomerSmall-angle neutron scatteringMatrix (geology)Condensed Matter::Soft Condensed MatterCondensed Matter::Materials ScienceFractalCopolymerGeneral Materials ScienceComposite materialApplied Physics A: Materials Science & Processing
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Structural and dynamical characterization of melt PEO–salt mixtures

2002

Abstract Salt doped poly ethylene oxide (PEO) mixtures were investigated by means of both small angle neutron scattering and QENS techniques aiming to characterize morphological and dynamical features in the melt state. These experimental evidences provide support to the proposed heterogeneous scenario for polymer electrolytes. In particular, the existence of PEO–cation complexes is proposed to play a major role in intramolecular cooperation and intermolecular transient crosslinks, which affects the mixture properties.

Statistics and Probabilitychemistry.chemical_classificationMaterials sciencePolymer electrolytesIntermolecular forceDopingtechnology industry and agricultureOxideSalt (chemistry)macromolecular substancesCondensed Matter PhysicsSmall-angle neutron scatteringCharacterization (materials science)chemistry.chemical_compoundchemistryChemical physicsIntramolecular forcePhysica A: Statistical Mechanics and its Applications
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Investigating self-assembly and metal nanoclusters in aqueous di-block copolymers solutions

2002

Self-assembling properties of di-block copolymers/ surfactant hybrids in aqueous solution can be exploited to obtain metal nanoparticles stable dispersion. Results will be presented here for polystyrene-block-poly(ethylene oxide) solutions. A SANS structural investigation has been performed over different molecular weights of both hydrophilic and hydrophobic block, by varying temperature and concentration of the copolymer. A SAXS characterization of micellar systems containing Pt nanoparticles is reported.

chemistry.chemical_compoundAqueous solutionEthylene oxidechemistryPulmonary surfactantSmall-angle X-ray scatteringPolymer chemistryCopolymerGeneral Materials ScienceGeneral ChemistrySelf-assemblyDispersion (chemistry)NanoclustersApplied Physics A: Materials Science & Processing
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