Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-27T01:48:46.334Z Has data issue: false hasContentIssue false
  • English
  • Français

Polymer Adsorption.

Published online by Cambridge University Press:  15 February 2011

M. Daoud
M. Daoud*
Affiliation:
Laboratoire Léon Brillouin (C.E.A.-C.N.R.S.), C.E.-Saclay, 91191 Gif-sur-Yvette cedex, France
Get access

Extract

Because of both their practical importance and their fundamental properties [1], polymers at interfaces have been under constant study. In this paper, we will consider the adsorbtion of linear chains on flat surfaces. Theoretical interest in this question was renewed recently by the introduction of scaling methods by de Gennes [2], Pincus [3], Binder, Kremer and Eisenriegler [4]. This allowed a new approach to the problem. New experimental methods such as neutron reflectivity [5] and small angle neutron scattering [6] also provided a much more detailed information than was previously available. This combined progress in theory and technique improved tremendously our understanding of the adsorption of linear chains on a flat impenetrable surface when the surface attraction is not too large. Many important questions however remain open. These are related both to the quality of the surface and to the nature of the solvent. Actual surfaces are never completely flat or homogeneous. Work is in progress to take into account surface roughness [7,8] and chemical imperfections [9,10]. Similarly, the quality of the solvent was considered in many directions. These include surface driven phase separation [11], or the effect of a mixed solvent on a copolymer. A somewhat different solvent effect will be considered here and is related to the length of the solvent molecules. Previous studies were concerned with solutions in a simple solvent [12]. It is possible both theoretically and experimentally to consider long polymers, made of N monomers, dissolved in shorter chains, with P units, of similar nature and slightly different interaction with the surface. The interest in this question is twofold. First by changing P, it is possible to have either adsorbed or desorbed probe chains as we shall see. Second, a generalization of this problem is to consider a mixture of both long and short chains in a simple solvent. The question then is the displacement of an adsorbed polymer by another one. In the following, we will only consider the equilibrium properties for the first case, in the absence of any simple solvent. As we shall see, this question is already very rich.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 290: Symposium N – Dynamics in Small Confining Systems , 1992 , 49
Copyright
Copyright © Materials Research Society 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Adsorption from solutions, Academic Press, (1983), Ottewill, R.H., Rochester, C.H., Smith, A.L., eds.Google Scholar
2. de Gennes, P.G., J. Physique, 37, 1445, (1976).Google Scholar
3. Pincus, P., de Gennes, P.G., J. Physique Lett., 44, 241, (1983).Google Scholar
4. Eisenriegler, E., Binder, K., Kremer, K., J. Chem. Phys., 77, 6296, (1982).Google Scholar
5. Auvray, L., Cotton, J.P., Macromolecules, 20, 202, (1987).Google Scholar
6. Bouchaud, E., Farnoux, B., Sun, X., Daoud, M., Jannink, G., Europhys. Lett., 2, 315, (1986).Google Scholar
7. Hone, D., Ji, H., Pincus, P., Macromolecules, 20, 2543, (1987).Google Scholar
8. Brochard, F., J. Physique, 46, 2117, (1985).Google Scholar
9. Edwards, S.F., Chen, Y., J. Phys. A211, 2963, (1988).Google Scholar
10. Marques, C., Thesis, Université Louis Pasteur, (1989).Google Scholar
11. Leibler, S., Thesis, Université Paris XI, (1984).Google Scholar
12. Bouchaud, E., Thesis, Université Paris XI, (1988).Google Scholar
13. de Gennes, P.G., J. Pol. Sci., Pol. symp. 6 n, 313, (1977).Google Scholar
14. Flory, P.J., Principles of polymer chemistry. Cornell University press, (1953).Google Scholar
15. Gennes, P.G. de,Scaling concepts in polymer physics, Cornell University press, (1979).Google Scholar
16. Edwards, S.F., Proc. Phys. Soc. 80, 265, (1966).Google Scholar
17. Binder, K., Kremer, K., in Scaling Phenomena in Disordered Systems, NATO A.S.I. B. 133, 525, Pynn, R. and Skjeltorp, A. eds.,Plenum Press (1985).Google Scholar
18. Ishinabe, T., J. Chem. Phys., 76, 5589, (1982), and 77, 3171 (1983).Google Scholar
19. Kremer, K., J. Phys. A16 4333 (1983).Google Scholar
20. Bouchaud, E., Daoud, M., J. Physique, 48, 1991 (1987).Google Scholar
21. Daoud, M., Macromolecules, 24, 6748 (1991).Google Scholar
22. Pefferkorn, E., Carroy, A., varoqui, R., Polymer, Phys. Ed., 23, 197 (1985).Google Scholar
23. P.de Gennes, G., Comptes Rendus Ac. Sci. (Paris), II3011, 1399 (1985).Google Scholar