title: Polymers in crowded environment under stretching force: Globule-coil transitions.
abstract: We study flexible polymer macromolecules in a crowded (porous) environment, modeling them as self-attracting self-avoiding walks on site-diluted percolative lattices in space dimensions d=2,3 . The influence of stretching force on the polymer folding and the properties of globule-coil transitions are analyzed. Applying the pruned-enriched Rosenbluth chain-growth method, we estimate the transition temperature TTheta between collapsed and extended polymer configurations and construct the phase diagrams of the globule-coil coexistence when varying temperature and stretching force. The transition to a completely stretched state, caused by applying force, is discussed as well.
authors.affiliation: Institut für Theoretische Physik and Centre for Theoretical Sciences (NTZ), Universität Leipzig, Postfach 100 920, D-04009 Leipzig, Germany. blavatska@itp.uni-leipzig.de
authors.forename: Viktoria
authors.initials: V
authors.lastname: Blavatska
authors.forename: Wolfhard
authors.initials: W
authors.lastname: Janke
mesh_terms: D003198:Computer Simulation; D055119:Elastic Modulus; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D011108:Polymers / Q000737:chemistry*; D013314:Stress, Mechanical
chemical_list: D011108:Polymers