Abstract
Shear induced aggregation of a Pectin stabilised emulsion trapped at the air-liquid interface was studied in a Couette system by video enhanced microscopy. From dimension analysis, Brownian motion was identified to enhance the probability of bond formation. The characteristic time scale of aggregation was found to scale as tc ∼ η/φ rather than tc ∼ 1/γ˙φ as expected for orthokinetic aggregation. The structure of very large clusters showed strongly rearranged strands and fractal scaling for low γ˙ and φ, analysed by density auto-correlation. At high γ˙ and φ, the cluster was dominated by larger drops and no fractal scaling could be determined for the accessible length scales.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 7 June 2000 Accepted: 1 August 2000
Rights and permissions
About this article
Cite this article
Hansen, P., Arnebrant, T. & Bergström, L. Shear induced aggregation of a pectin stabilised emulsion in two dimensions. Colloid Polym Sci 279, 153–160 (2001). https://doi.org/10.1007/s003960000412
Issue Date:
DOI: https://doi.org/10.1007/s003960000412