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  Scaling laws for the swelling of neutral and charged polymer brushes in good solvents

Biesalski, M., & Rühe, J. (2002). Scaling laws for the swelling of neutral and charged polymer brushes in good solvents. Macromolecules, 35(2), 499-507.

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 Creators:
Biesalski, M.1, Author              
Rühe, Jürgen1, Author              
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: We compare the swelling of surface-attached neutral poly(4- vinylpyridine) (PVP) and charged poly(N-methyl-4- vinylpyridinium iodide) (MePVP) brushes under good solvent conditions using multiple-angle null ellipsometry. The polymer layers were prepared by the "grafting from" technique, where a low molecular mass initiator is self-assembled on the substrate and the polymer brush is grown in situ by free radical chain polymerization. The positively charged MePVP brush was generated from a neutral PVP brush by a polymer-analogous quaternization reaction. As predicted by mean-field theory, the thickness of the neutral swollen brush (PVP) increases with graft density whereas the thickness of the highly charged polyelectrolyte (MePVP) brush in pure water ("salt-free") is almost independent of the graft density.

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Language(s): eng - English
 Dates: 2002-01-15
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28311
ISI: 000173229600027
 Degree: -

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Title: Macromolecules
  Alternative Title : Macromolecules
Source Genre: Journal
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Pages: - Volume / Issue: 35 (2) Sequence Number: - Start / End Page: 499 - 507 Identifier: ISSN: 0024-9297