Evidence for relative radius of gyration as the criterion for selective diffusion behavior of polymer brushes
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...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1999. - 25(2009), 14 vom: 21. Juli, Seite 7983-9 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
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2009
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | 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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| Beschreibung: | Date Completed 17.09.2009 Date Revised 14.07.2009 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la900468n |