Regensburg 2010 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 14: Poster: Interfaces and Thin Films

CPP 14.3: Poster

Montag, 22. März 2010, 16:30–18:00, Poster C

Polymer chains in confined geometries with long-range correlated disorder. — •Zoryana Usatenko — Universitat Duisburg-Essen, Fachbereich Physik,Duisburg, Germany — Institute for Condensed Matter Physics, Lviv, Ukraine

The influence of long-range correlated disorder of the form 1/r^a , where a<d−1 (and r denotes the distance parallel to the surface) in dilute solution of long-flexible polymer chains in a good solvent on the depletion interaction potential and depletion force between two parallel repulsive walls is studied. The calculations are performed in the framework of renormalization group field theoretical approach up to first order of perturbation theory in a double (є,δ)- expansion (є=4−d, δ=4−a) for φ⁴ O(n,m)-vector model in the limit n,m→ 0. Besides, the calculations of the monomer density profiles and the density profiles of end points for different regions L>>R_g and L<<R_g, where L is distance between the walls and R_g - the gyration radius of polymer chain in unrestricted region are performed.