Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: C1.00010 : Theory of Nanoparticle Interactions Mediated by Reversibly Binding Polymer Chains
Author:
In stable polymer-nanoparticle composites, particles must
be compatibilized with the polymer matrix to overcome entropically-
driven, short-range depletion forces that drive particle
aggregation. One strategy is to incorporate end-functional groups
to polymers that reversibly bind to particle surfaces via donor-
acceptor type interactions, such as hydrogen bonding. The addition
of reversibly binding chain ends introduces a new length scale
for the effective interaction between two particles due to the
possibility of inter-particle bridging conformations available to
chains at small particle-particle separations. We use self-
consistent field theory to explore the effective pairwise particle
potential in a melt of reversibly associating chains and examine
how changing particle size, chain length and binding affinity
shapes the free energy of interaction and alters higher-order
inter-particle organization in nanocomposites.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.C1.10
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