Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2010-05-03
Physics
Condensed Matter
Soft Condensed Matter
12 figures
Scientific paper
A coarse grained model for flexible polymers end-grafted to repulsive spherical nanoparticles is studied for various chain lengths and grafting densities under good solvent conditions, by Molecular Dynamics methods and density functional theory. With increasing chain length the monomer density profile exhibits a crossover to the star polymer limit. The distribution of polymer ends and the linear dimensions of individual polymer chains are obtained, while the inhomogeneous stretching of the chains is characterized by the local persistence lengths. The results on the structure factor of both single chain and full spherical brush as well as the range of applicability of the different theoretical tools are presented. Eventually an outlook on experiments is given.
Binder Kurt
Egorov Sergei A.
Milchev Andrey
Verso Federica Lo
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