Microcapsule Buckling Triggered by Compression-Induced Interfacial Phase Change

There is an emerging trend toward the fabrication of microcapsules at liquid interfaces. In order to control the parameters of such capsules, the interfacial processes governing their formation must be understood. Here, poly(vinyl alcohol) films are assembled at the interface of water-in-oil microfl...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 32(2016), 42 vom: 25. Okt., Seite 10987-10994
1. Verfasser: Salmon, Andrew R (VerfasserIn)
Weitere Verfasser: Parker, Richard M, Groombridge, Alexander S, Maestro, Armando, Coulston, Roger J, Hegemann, Jonas, Kierfeld, Jan, Scherman, Oren A, Abell, Chris
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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245 1 0 |a Microcapsule Buckling Triggered by Compression-Induced Interfacial Phase Change 
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520 |a There is an emerging trend toward the fabrication of microcapsules at liquid interfaces. In order to control the parameters of such capsules, the interfacial processes governing their formation must be understood. Here, poly(vinyl alcohol) films are assembled at the interface of water-in-oil microfluidic droplets. The polymer is cross-linked using cucurbit[8]uril ternary supramolecular complexes. It is shown that compression-induced phase change causes the onset of buckling in the interfacial film. On evaporative compression, the interfacial film both increases in density and thickens, until it reaches a critical density and a phase change occurs. We show that this increase in density can be simply related to the film Poisson ratio and area compression. This description captures fundamentals of many compressive interfacial phase changes and can also explain the observation of a fixed thickness-to-radius ratio at buckling, [Formula: see text] 
650 4 |a Journal Article 
700 1 |a Parker, Richard M  |e verfasserin  |4 aut 
700 1 |a Groombridge, Alexander S  |e verfasserin  |4 aut 
700 1 |a Maestro, Armando  |e verfasserin  |4 aut 
700 1 |a Coulston, Roger J  |e verfasserin  |4 aut 
700 1 |a Hegemann, Jonas  |e verfasserin  |4 aut 
700 1 |a Kierfeld, Jan  |e verfasserin  |4 aut 
700 1 |a Scherman, Oren A  |e verfasserin  |4 aut 
700 1 |a Abell, Chris  |e verfasserin  |4 aut 
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