Journal
LANGMUIR
Volume 32, Issue 11, Pages 2574-2581Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.6b00105
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Funding
- JSPS [21685020]
- Grants-in-Aid for Scientific Research [21685020] Funding Source: KAKEN
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This study describes the development of self-propelled vesicles using transient interfacial energy in an aqueous two-phase system composed of polyethylene glycol (PEG), dextran (DEX), and water. The transient interfacial energy was generated at the mixing boundary between the PEG and DEX solutions when the two miscible liquids were in contact with each other far from equilibrium. Vesicles encapsulating 20 wt % DEX solution traveled spontaneously when the PEG concentration in the environmental media was >15 wt %. The motility of the vesicles varied with the permeability of the vesicle membrane. The permeability increased significantly when the concentration of PEG was >15 wt %. PEG had a profound effect not only on mass transfer through the membrane but also on the motility of the vesicles.
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