6533b7d2fe1ef96bd125df8c
RESEARCH PRODUCT
Brownian dynamics of grafted polymer chains: time dependent properties
Igor M. NeelovIgor M. NeelovKurt Bindersubject
chemistry.chemical_classificationQuantitative Biology::BiomoleculesPolymers and PlasticsPlane (geometry)Organic ChemistryRelaxation (NMR)Rotation around a fixed axisFunction (mathematics)PolymerCondensed Matter PhysicsMolecular physicsExponential functionCondensed Matter::Soft Condensed MatterInorganic ChemistrychemistryChain (algebraic topology)Materials ChemistryBrownian dynamicsPhysical chemistrydescription
Results of computer simulations of polymer layers consisting of chains grafted by one end on an unpenetrable plane are presented. Characteristics of translational and rotational motion of different chain segments and correlation functions of chain radii were calculated both for single layers at different grafting densities s and for two interacting layers at different distances D between parallel grafting planes. Two values of grafting density were used in the latter case. The behavior of different correlation times as function of s and D and the interplay between the interpenetration of the brushes and rotational and translational motion are discussed. Both relaxation functions and mean square displacements are discussed in terms of stretched exponentials, and the behavior of the resulting “Kohlrausch exponents” γ is presented in detail.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-11-01 | Macromolecular Theory and Simulations |