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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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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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 / アゾベンゼン系界面活性剤 / 溶解度パラメータ / シアノ化反応 / アゾベンゼン修飾界面活性剤 / 光異性化 / 界面張力 |
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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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Report
(4 results)
Research Products
(26 results)
