Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates
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 bru...
| Principais autores: | , |
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| Formato: | Artigo |
| Idioma: | en_US |
| Publicado em: |
American Institute of Physics
2013
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| Acesso em linha: | http://hdl.handle.net/1721.1/79417 https://orcid.org/0000-0001-5554-1283 |
| _version_ | 1826199559946108928 |
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| author | Van Lehn, Reid C. Alexander-Katz, Alfredo |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Van Lehn, Reid C. Alexander-Katz, Alfredo |
| author_sort | Van Lehn, Reid C. |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T11:21:55Z |
| format | Article |
| id | mit-1721.1/79417 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:21:55Z |
| publishDate | 2013 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/794172022-10-01T03:06:17Z Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates Van Lehn, Reid C. Alexander-Katz, Alfredo Massachusetts Institute of Technology. Department of Materials Science and Engineering Van Lehn, Reid C. Alexander-Katz, Alfredo 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. National Science Foundation (U.S.) (Graduate Research Fellowship Program) National Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (DMR–0819762) 2013-07-02T20:31:29Z 2013-07-02T20:31:29Z 2011-10 2011-08 Article http://purl.org/eprint/type/JournalArticle 00219606 1089-7690 http://hdl.handle.net/1721.1/79417 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. https://orcid.org/0000-0001-5554-1283 en_US http://dx.doi.org/10.1063/1.3653937 Journal of Chemical Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics MIT web domain |
| spellingShingle | Van Lehn, Reid C. Alexander-Katz, Alfredo Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title | Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title_full | Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title_fullStr | Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title_full_unstemmed | Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title_short | Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| title_sort | communication lateral phase separation of mixed polymer brushes physisorbed on planar substrates |
| url | http://hdl.handle.net/1721.1/79417 https://orcid.org/0000-0001-5554-1283 |
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