0000000000371337

AUTHOR

Ulrike Breiner

showing 4 related works from this author

Structural Characterization of the “Knitting Pattern” in Polystyrene-block-poly(ethylene-co-butylene)-block-poly(methyl methacrylate) Triblock Copoly…

1998

In a polystyrene-block-polybutadiene-block-poly(methyl methacrylate) triblock copolymer (SBM) a morphological transition from a lamellar (ll) morphology (with sequence ABCB) to the knitting pattern (kp) morphology occurs upon hydrogenation of the center PB block. Structural information of the nonhydrogenated and the hydrogenated material is provided from small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). For the nonhydrogenated SBM sample the SAXS profile correlates well with a simple periodic lamellar structure. The hydrogenated sample forming the kp morphology displays a more complex SAXS pattern. From the TEM images of the knitting pattern the two-dimensional…

Materials scienceMorphology (linguistics)Polymers and PlasticsSmall-angle X-ray scatteringOrganic ChemistryPoly(methyl methacrylate)Inorganic ChemistryCrystallographychemistry.chemical_compoundchemistryTransmission electron microscopyvisual_artPolymer chemistryMaterials Chemistryvisual_art.visual_art_mediumCopolymerLamellar structurePolystyreneMethyl methacrylateMacromolecules
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Organometallic ABC-triblock copolymers

1998

The interaction of Fe and Pd complexes with double bonds of the polybutadiene (PB) block in polystyrene-polybutadiene-poly(methyl methacrylate) block copolymers has been studied. The incorporation of Fe(CO)3 fragments into the PB bloc was found to result in an increase in its rigidity. The presence of iron or palladium complexes in the PB block affects strongly the morphology of the triblock copolymers.

chemistry.chemical_classificationDouble bondInfrared spectroscopychemistry.chemical_elementGeneral Chemistrychemistry.chemical_compoundDifferential scanning calorimetryPolybutadienechemistryTransmission electron microscopyPolymer chemistryCopolymerMethyl methacrylatePalladiumRussian Chemical Bulletin
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Evolution of the “knitting pattern” morphology in ABC triblock copolymers

1996

A new morphology of ternary ABC triblock copolymers is presented which results from the asymmetric interaction between a centre block (poly(ethylene-co-butene)) to different end blocks (polystyrene and poly(methyl methacrylate)). This morphology with the appearance of a “knitting pattern” can be described as an intermediate of a morphology of A, B and C lamellae and a morphology of A and C lamellae with B cylinders at the A/C interface.

Crystallographychemistry.chemical_compoundMaterials scienceMorphology (linguistics)Polymers and PlasticschemistryOrganic ChemistryPolymer chemistryMaterials ChemistryCopolymerPolystyreneMethyl methacrylateTernary operationMacromolecular Rapid Communications
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Cylindrical morphologies in asymmetric ABC triblock copolymers

1997

In asymmetric ABC triblock copolymers with C being the matrix-forming majority component, the formation of cylindrical morphologies is governed by the sum of the volume fractions of the components A and B (Φ A + Φ B ) as well as by their ratio (Φ B /Φ A ). The paper describes the morphologies of various polystyrene-block-polybutadiene-block-poly(methyl methacrylate) (SBM) and polystyrene-block-poly(ethylene-co-butylene)-block-poly(methyl methacrylate) block copolymers (SEBM) in dependence on these parameters. In addition to previously reported cylinder in cylinder (c i c, core shell) and helical (hel) morphologies, new microphase separated structures as cylinders at cylinder (c a c), undula…

Materials scienceMorphology (linguistics)Polymers and PlasticsOrganic ChemistryCondensed Matter PhysicsCore shellchemistry.chemical_compoundchemistryPolymer chemistryMaterials ChemistryCopolymerCylinderSPHERESPhysical and Theoretical ChemistryMethyl methacrylateMacromolecular Chemistry and Physics
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