Interfacial Properties of Chitosan in Interfacial Shear and Capsule Compression
Source abstract
Abstract
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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Pickering emulsions and particle stabilization · Surfactants and Colloidal Systems · Polymer Surface Interaction Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
Funding
Eidgen?ssische Technische Hochschule Z?rich · Australian Research Council · University of Melbourne · Robert Bage · Mondelez Australia Pty Ltd
References (69)
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