Phase-Separation-Induced Surface Patterns in Thin Polymer Blend Films
| Autor: | Charles C. Han, Thomas P. Russell, René M. Overney, Alamgir Karim, Sushil K. Satija, T. M. Slawecki, Miriam Rafailovich, Jack F. Douglas, Yun Liu, J. Sokolov, Sanat K. Kumar |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Polymers and Plastics Spinodal decomposition Annealing (metallurgy) Organic Chemistry technology industry and agriculture Energy minimization Aspect ratio (image) Poly(methyl methacrylate) Physics::Fluid Dynamics Condensed Matter::Soft Condensed Matter Inorganic Chemistry Reflection (mathematics) visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Polymer blend Thin film Composite material |
| Zdroj: | Macromolecules. 31:857-862 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | Atomic force microscopy (AFM), neutron reflection (NR) and secondary ion mass spectroscopy (SIMS) are used to examine phase separation in symmetrically segregating thin polymer blend films (≤1000 A). Phase separation in the film leads to undulations of the liquid−air interface, provided the film is sufficiently thin to suppress surface-directed spinodal decomposition waves. Flattened droplets are formed at a very late stage of phase separation, and the aspect ratio of these droplets can be rationalized by an interfacial free energy minimization argument. |
| Databáze: | OpenAIRE |
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