2017 Fiscal Year Final Research Report
Demulsification Behavior of Emulsions Using Photoresponsive Surfactants
| Project/Area Number |
15K17847
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 界面活性剤 / エマルション / アゾベンゼン / 解乳化 |
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| Outline of Final Research Achievements |
We have succeeded in photoinduced demulsification of emulsions prepared using photoresponsive surfactants having an azobenzene group. Photoisomerization of azobenzene-containing surfactants from trans to cis isomers brings about the photoinduced demulsification. It is revealed that the demulsification results from a change in the interfacial properties, such as occupied areas per molecule and interfacial tension, of the photoresponsive surfactants at the oil/water interface. When emulsions prepared using various oils are demulsified by light irradiation, the results indicate that the demulsification have versatility of oils. It is anticipated that this photoinduced demulsification will be one of separation and extraction technologies.
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| Free Research Field |
界面化学
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