Weak polyacid brushes: preparation by LB deposition and optically detected titrations

Langmuir

Volumn 15, Issue 21, 1999, Pages 7116-7118

  Currie, E P K ^a   Sieval, A B ^a   Avena, M ^a   Zuilhof, H ^a   Sudholter E J R ^a   Cohen Stuart, M A ^a  

^a WAGENINGEN UNIVERSITY   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

ACRYLICS; BLOCK COPOLYMERS; DEPOSITION; GRAFTING (CHEMICAL); IONIC STRENGTH; LANGMUIR BLODGETT FILMS; PHASE INTERFACES; POLYSTYRENES; SILICON WAFERS; TITRATION;

LANGMUIR-BLODGETT DEPOSITION; POLYACRYLIC ACID; POLYMER BRUSHES;

PLASTIC FILMS;

EID: 0033204204     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la990689p     Document Type: Article

References (21)

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2. (b) Halperin, A.; Tirrell, M.; Lodge, T. P. Adv. Polym. Sci. 1992,100,31.
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12. Sieval, A. B.; Demirel, A. L.; Nissink, J. W. M.; Linford, M. R.; van der Maas, J. H.; de Jeu, W. H.; Zuilhof, H.; Sudhölter, E. J. R. Langmuir 1998, 14, 1759-1768.
13. Sieval, A. B.; Vleeming, V.; Zuilhof, H.; Sudhölter, E. J. R. Langmuir, in press.
14. We remark that during the radical polymerization reaction a few oligimers may form in the styrène monolayer. As a PS layer of 80 nm is spin-coated on top of the monolayer, these oligomers are of no importance.
15. Currie, E. P. K; Cohen Stuart, M. A., Fleer, G. J. In preparation.
16. Roberts,G.,Ed.Langmuir-BlodgettFilms;PlenumPress: New York, 1990.
17. Brandrup, J.; Immergut, E. H. Polymer Handbook, 3rd ed.; Wiley: New York, 1989.
18. Dijt, J. C.; Cohen Stuart, M. A.; Hofman, J. E.; Fleer, G. J. J. Colloid Interface Sci. 1990, 51, 141.
19. Born, M.; Wolf, E. Principles of Optics, 5th ed.; Pergamon Press: Oxford, 1975.
20. We remark that a is not a constant but varies as a function of the distance to the grafting plane.2'3 However, reflectometry is insensitive to this dissociation gradient, and an average value over the brush is measured. Therefore, with a the value averaged over the brush layer is implied.
21. Actually a potential gradient ψ(z) is present in the brush, which is coupled to the dissociation gradient a(z). As is the case for a, an average value for f is estimated.