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Evidence for Relative Radius of Gyration as the Criterion for Selective Diffusion Behavior of Polymer Brushes
Journal article   Peer reviewed

Evidence for Relative Radius of Gyration as the Criterion for Selective Diffusion Behavior of Polymer Brushes

Hyun-Su Lee and Lynn S. Penn
Langmuir, v 25(14), pp 7983-7989
21 Jul 2009
PMID: 19388629

Abstract

Chemistry Chemistry, Multidisciplinary Chemistry, Physical Materials Science Materials Science, Multidisciplinary Physical Sciences Science & Technology Technology
When exposed to a dilute solution of free species, the polymer brush functions as a selective barrier to diffusion. Experiments with linear polymer chains and dendrimers of various sizes demonstrated that the selection criterion is relative size, i.e., radius of the free species (radius of gyration for linear chains and simple radius for dendrimers) relative to the radius of gyration of the chains composing the brush. This suggests that linear chains do not necessarily assume extended conformations as they diffuse into a brush but have conformations similar to those of nanoscale spherical inclusions.

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Web of Science research areas
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
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