Article,

Topological entanglement length in polymer melts and nanocomposites by a DPD polymer model

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Soft Matter, 9 (14): 3877-3884 (2013)
DOI: 10.1039/C3SM27651A

Abstract

We investigate the topological constraints (entanglements) in polymer-nanorod nanocomposites in comparison to polymer melts using dissipative particle dynamics (DPD) polymer model simulations. The nanorods have a radius smaller than the polymer radius of gyration and an aspect ratio of 7.5. We observe an increase in the number of entanglements (50% decrease of Ne with 11% volume fraction of nanorods dispersed in the polymer matrix) in the nanocomposites as evidenced by larger contour lengths of the primitive paths. The end-to-end distance is essentially unchanged with the nanorod volume fraction (0-11%). Interaction between polymers and nanorods affects the dispersion of nanorods in the nanocomposites.

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