Regensburg 2025 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 23: Polymer and Molecular Dynamics, Friction and Rheology
CPP 23.6: Talk
Wednesday, March 19, 2025, 11:00–11:15, H34
The analytical investigation of star polymers in confined geometries — •Zoriana Danel1, Joanna Halun2, and Maciej Dudek3 — 1Cracow University of Technology — 2Institute of Nuclear Physics — 3Academy WSB
The analysis of the influence of star polymer topology on the depletion interaction potentials, the depletion forces and Pincus force was carried out analytically. The method of calculation of the dimensionless depletion interaction potentials and the dimensionless depletion forces for a dilute solution of ideal star polymers with f=3, 4, 5 legs in a Θ - solvent confined in a slit geometry of two parallel walls with repulsive surfaces and for the case of one repulsive and the other inert surface was proposed. Besides, we performed the investigation of the elastic properties of star polymers with different number of legs in a semi-infinite space confined by single wall with different boundary conditions and calculated Pincus force in the above mentioned cases. Calculations were carried out for star polymers with f=3,4,5 legs attached to the substrate by one or two arms. The acquired results showed that the Pincus force is affected by the number of arms attached to the surface. The obtained results are interesting from scientific and industrial point of view, because of their potential use in the production of paints, varnishes and new functional materials. Star polymers, due to their topology and shape can find practical application in nano - technology, as well as in biotechnology and medicine for drug and gene transmission.
Keywords: soft matter; star polymers; theory; surfaces; elastic properties