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http://hdl.handle.net/11375/22331
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DC Field | Value | Language |
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dc.contributor.advisor | Shi, An-Chang | - |
dc.contributor.author | Lai, Chi To | - |
dc.date.accessioned | 2017-10-30T15:34:29Z | - |
dc.date.available | 2017-10-30T15:34:29Z | - |
dc.date.issued | 2017 | - |
dc.identifier.uri | http://hdl.handle.net/11375/22331 | - |
dc.description.abstract | We study the formation of novel bicontinuous phases in binary mixtures of AB diblock copolymers (DBCP) using the polymeric self-consistent field theory. We predict that the bicontinuous double-diamond (DD) and plumber’s nightmare (P) phases, which are metastable phases of neat diblock copolymers, could be stablized in gyroid-forming A-minority DBCPs via the blending of specifically designed A-majority DBCPs. The mechanisms of stabilizing different bicontinuous phases are revealed by analyzing the spatial distribution of the different DBCPs. It is found that the A-majority DBCPs residing mainly in the nodes of the structure, thus alleviating the packing frustration of the A-blocks. Furthermore, a local segregation of the two DBCPs occurs at the AB interface, thus regulating the local curvature of the interfaces. A synergetic interplay of these two mechanisms results in a larger stable region of the DD and P phases via the addition of tailored A-majority DBCPs. The theoretical study provides an efficient route to obtain novel bicontinuous phases. | en_US |
dc.language.iso | en | en_US |
dc.subject | Polymers | en_US |
dc.subject | Self-assembly | en_US |
dc.subject | Bicontinuous phases | en_US |
dc.subject | Binary mixtures | en_US |
dc.title | Theory of Binary Mixtures of Diblock Copolymers: A New Route to the Double-Diamond & Plumber’s Nightmare Phases | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Physics and Astronomy | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MSc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Lai_ChiTo_2017July_MSc.pdf | 3.89 MB | Adobe PDF | View/Open |
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