Journal article
Interfacial Properties of Chitosan in Interfacial Shear and Capsule Compression.
- Biviano MD Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
- Böni LJ Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
- Berry JD Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
- Fischer P Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
- Dagastine RR Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
- 2020-09-14
Published in:
- ACS applied materials & interfaces. - 2020
English
The time-dependent behavior of surface-active adsorption layers at the oil/water interface can dictate emulsion behavior at both the micro- and macroscale. In addition, self-healing behavior of the adsorption layer may benefit emulsion stability subject to large deformation under processing or during final application. We explore the behavior of chitosan, a known hydrophilic emulsifier, which forms nanoparticle aggregates when the concentration of acetate buffer exceeds 0.3 M. We observe a Pickering adsorption layer building and strain-dependent behavior of the chitosan at the medium chain triglyceride oil/water interface. We compare this to the behavior of identical chitosan layers coated on oil droplets via atomic force microscopy colloidal probe compression in both linear and oscillatory compressions. In both interfacial shear rheometry and the capsule compression, a thick, elastic layer with strong time-dependent recovery behavior is observed, suggesting that the layer has some self-healing capabilities.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1021/acsami.0c11781
- PMID 32921046
- Persistent URL
- https://sonar.ch/global/documents/244271
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