0000000000909285

AUTHOR

Kerstin Gohr

showing 2 related works from this author

Dynamics of Copolymer Micelles in a Homopolymer Melt:  Influence of the Matrix Molecular Weight

2000

We have studied the dynamics of styrene−isoprene (SI) block copolymer micelles in a matrix of linear entangled polyisoprene (PI) chains, using forced Rayleigh scattering (FRS) and dynamic mechanica...

Self-diffusionPolymers and PlasticsChemistryOrganic ChemistryDynamics (mechanics)Concentration effectMicelleCondensed Matter::Soft Condensed MatterInorganic ChemistryMatrix (mathematics)Molten stateChemical engineeringPolymer chemistryMaterials ChemistryCopolymerForced Rayleigh scatteringPhysics::Chemical PhysicsMacromolecules
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Influence of Hair Density and Hair Length on Interparticle Interactions of Spherical Polymer Brushes in a Homopolymer Matrix

2003

The dynamics of hairy spherical nanoparticles in a melt of linear polymer chains has been investigated by mechanical spectroscopy as a function of particle topology and concentration. Using a simple free volume approach for the data analysis of the structural relaxation time vs concentration and the well-known hard-sphere result as a reference, a semiquantitative measure for the interparticle interactions, that is particle deformability/softness, and the effective particle size compared to the size of a nonswollen spherical brush has been determined. For these studies, model particles of hairy nanoparticles differing in either hair length or grafting density have been prepared. In contrast …

chemistry.chemical_classificationMaterials sciencePolymers and PlasticsOrganic ChemistryNanoparticlePolymerGraftingMicelleViscoelasticityCondensed Matter::Soft Condensed MatterInorganic ChemistryChemical engineeringchemistryPolymer chemistryMaterials ChemistryCopolymerParticleParticle sizeMacromolecules
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