| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000408773 |
| ISSN: | 0103-9733 |
| Authors: | Benhamou, M1 Yaznasni, M. El1 Ridouane, H1 Hachem, E.K1 |
| Institutions: | 1Universite Hassan II de Casablanca, Faculte des Sciences Ben M'Sik, Casablanca. Marruecos |
| Year: | 2006 |
| Season: | Dic |
| Volumen: | 36 |
| Number: | 4A |
| Pages: | 1309-1317 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | This paper is devoted to a review of recent progresses concerning the computation of the Casimir force between two parallel plates delimitating a polymer blend or a ternary polymer solution (with a good solvent). We assume that, close to the consolute point, one or the two polymers of the mixture are strongly attracted by the plates (critical adsorption). For both systems, the induced force originates from the fluctuations of composition near the consolute point. In polymer blends case, it was found that the force decreases with separation L between the two plates as L−4, with a known universal amplitude. For ternary polymer solutions, however, it has been shown that the interaction force decays rather as L−3. This drastic change of the force expression is due to the presence of the good solvent, which gives rise to additional fluctuations of polymer concentration. To do calculations, for the two systems, use is made of the standard ϕ4-theory, where the field ϕ is the order parameter or composition fluctuation |
| Disciplines: | Física y astronomía |
| Keyword: | Física, Física de partículas y campos cuánticos, Teoría cuántica de campos, Efecto Casimir, Polímeros |
| Keyword: | Physics and astronomy, Particle physics and quantum fields, Physics, Quantum field theory, Casimir effect, Polymers |
| Full text: | Texto completo (Ver PDF) |
