Frustrated Coalescence in a Chemically Reactive Polymer Blend Film
| Autor: | R J. Goyette, Alamgir Karim, Jack F. Douglas, Sushil K. Satija, Charles C. Han |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Coalescence (physics)
Materials science Polymers and Plastics Spinodal decomposition Organic Chemistry technology industry and agriculture eye diseases law.invention Inorganic Chemistry Chemical engineering Optical microscope law visual_art Microscopy Polymer chemistry Materials Chemistry visual_art.visual_art_medium Polymer blend Thin film Polycarbonate Layer (electronics) |
| Zdroj: | Macromolecules. 32:1119-1127 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma980296h |
| Popis: | The phase separation of a thin polymer blend layer undergoing a simultaneous transesterification reaction is examined by a variety of experimental techniques [neutron and X-ray reflectivity, optical microscopy, atomic force microscopy (AFM)] to determine morphological features unique to reactive phase separation. Neutron reflectivity measurements suggest that a copolymer layer reactively forms at the interface between the phase-separating blend components. Evidence for a copolymer layer is also provided by AFM and optical images which indicate a strong inhibition (frustration) of droplet coalescence and a tendency of the droplets to cluster in late-stage phase separation. The influence of the transesterification reaction on phase separation is found to depend strongly on temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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