Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates
Author(s)Van Lehn, Reid C.; Alexander-Katz, Alfredo
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Here, we present a new method to model lateral phase separation in mixed polymer brushes physisorbed to a planar surface with mobile grafting points. The model is based on a local mean field theory that combines a Flory-Huggins approximation for interaction enthalpies with an Alexander-de Gennes brush entropy contribution. Using Monte Carlo sampling, the application of these two interactions to a lattice model yields a range of phase behavior consistent with previous theoretical and experimental work. This model will be useful for predicting mixed polymer brush morphologies on planar surfaces and in principle can be extended to other geometries (e.g., spheres) and polymer systems.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering
Journal of Chemical Physics
American Institute of Physics
Van Lehn, Reid C., and Alfredo Alexander-Katz. Communication: Lateral Phase Separation of Mixed Polymer Brushes Physisorbed on Planar Substrates. The Journal of Chemical Physics 135, no. 14 (2011): 141106. © 2011 American Institute of Physics.
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