Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 63: Interfaces and Thin Films II (joint session CPP/DY, organized by CPP)
CPP 63.1: Vortrag
Freitag, 11. März 2016, 09:30–09:45, H51
Ring polymer chains in confined geometries: Massive field theory approach — •Zoryana Usatenko1 and Joanna Halun2 — 1Institute of Physics, Cracow University of Technology — 2Faculty of Physics, Mathematics and Computer Science, Cracow University of Technology
The investigation of a dilute solution of phantom ideal and real ring polymer chains with excluded volume interactions in a good solvent confined in a slit geometry of two parallel walls was performed. Taking into account the well known polymer - magnet analogy developed by de Gennes the calculations of the correspondent partition functions, depletion interaction potentials, depletion forces and the forces which exert phantom ideal ring polymer chain on the surfaces were performed in a fixed space dimensions d=3 for two repulsive walls, two inert walls and for the mixed case of one inert and one repulsive wall. Besides, for the case of ring polymer chain with EVI confined in a slit geometry of two parallel repulsive walls calculations were performed up to one-loop order. It was found that the confining of ring polymer chain to a slit geometry of two walls leads to the loss of configurational entropy and to arising of the repulsive force which exerts ring polymer chain on the surfaces. Increasing of the slit size leads to decreasing of the value of the exerted force on the surfaces at the same value of the end-to-end distance.