Microcapsule Buckling Triggered by Compression-Induced Interfacial Phase ChangeReport as inadecuate


Microcapsule Buckling Triggered by Compression-Induced Interfacial Phase Change


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Publication Date: 2016-10-25

Journal Title: Langmuir

Publisher: American Chemical Society

Volume: 32

Issue: 42

Pages: 10987-10994

Language: English

Type: Article

This Version: VoR

Metadata: Show full item record

Citation: Salmon, A., Parker, R., Groombridge, A., Maestro, A., Coulston, R., Hegemann, J., Kierfeld, J., et al. (2016). Microcapsule Buckling Triggered by Compression-Induced Interfacial Phase Change. Langmuir, 32 (42), 10987-10994. https://doi.org/10.1021/acs.langmuir.6b03011

Abstract: There is an emerging trend towards 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, $\left(\frac TR\right)$$_{buck}$.

Relationships: Is supplemented by: https://doi.org/10.17863/CAM.4910

Sponsorship: EPSRC (EP/G037221/1)

European Research Council (240629)

European Commission (607602)

Isaac Newton Trust (1307(c))

EPSRC (EP/L015978/1)

Embargo Lift Date: 2100-01-01

Identifiers:

External DOI: https://doi.org/10.1021/acs.langmuir.6b03011

This record's URL: https://www.repository.cam.ac.uk/handle/1810/261501



Rights: Attribution 4.0 International

Licence URL: http://creativecommons.org/licenses/by/4.0/





Author: Salmon, AR Parker, RM Groombridge, ASMaestro, ACoulston, RJHegemann, JKierfeld, J Scherman, OA Abell, CShow moreShow less

Source: https://www.repository.cam.ac.uk/handle/1810/261501



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