Diamond-Forming Block Copolymers and Diamond-like Morphologies: A New Route toward Efficient Block Copolymer Membranes
| Autor: | G. ten Brinke, Igor Erukhimovich, Yury A. Kriksin |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Diamond engineering.material Condensed Matter::Soft Condensed Matter Inorganic Chemistry Tetragonal crystal system Chemical physics Percolation Materials Chemistry Copolymer engineering Lamellar structure Orthorhombic crystal system Thin film Ternary operation |
| Zdroj: | Macromolecules. 48:7909-7922 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | A new promising class of ordered block copolymer morphologies in thin films we call diamond-like morphologies (DLM) is theoretically described in detail. This class comprises the cubic morphologies possessing diamond symmetry Fd3m as well as its tetragonal and orthorhombic generalizations. The characteristic property of the DLM is that the corresponding percolation cluster contains both perpendicular and parallel (with respect to the substrate) intertwining channels, which is expected to improve noticeably the permeability efficiency of such quasi-isotropic morphologies as compared to the anisotropic lamellar and cylindrical ones. On the basis of both the weak segregation theory (WST) analytical consideration and self-consistent field theory (SCFT) numerical procedure, we find relationships between the microscopic parameters of the ternary ABC symmetric block copolymers of a specified composition and their morphology in thin films. The effects of confinement (film width) and the film walls selectivity ar... |
| Databáze: | OpenAIRE |
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