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          Institute: MPI für Polymerforschung     Collection: MPI Polymerforschung     Display Documents



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ID: 56197.0, MPI für Polymerforschung / MPI Polymerforschung
Arrested swelling of highly entangled polymer globules
Authors:Lee, N. K.; Abrams, C. F.; Johner, A.; Obukhov, S.
Language:English
Date of Publication (YYYY-MM-DD):2003-06-06
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Volume:90
Issue / Number:22
Sequence Number of Article:225504
Review Status:not specified
Audience:Not Specified
Abstract / Description:Upon aging, a collapsed long chain evolves from a crumpled state to a self-entangled globule which can be thought of as a large knot. Swelling of an equilibrium globule in good solvent is a two-step process: (i) fast swelling into an arrested stretched structure with conserved entanglement topology followed by (ii) slow disentanglement. Using computer simulation, we found both mass-mass (m-m) and entanglement-entanglement (e-e) power law correlations inside the swollen globule. The m-m correlations are characterized by a set of two exponents in agreement with a Flory-type argument. The e-e correlations are also characterized by two exponents, both of them larger (by ~0.3) than the related m-m exponents. We interpret this difference as evidence of distance-dependent repulsion E=-0.3ln(ρ)kBT between entanglements sliding along the polymer chain.
Comment of the Author/Creator:Date: 2003, JUN 6
External Publication Status:published
Document Type:Article
Affiliations:MPI für Polymerforschung
External Affiliations:ICS, Lab Europeen Associe, Strasbourg, France.; Drexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA.; Inst Charles Sadron, F-67083 Strasbourg, France.; Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
Identifiers:ISI:000183381200021 [ID No:1]
ISSN:0031-9007 [ID No:2]
LOCALID:P-03-251
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