Water-in-water pickering emulsion stabilized by polydopamine particles and cross-linking

Zhang, J., Hwang, J., Antonietti, M. and Schmidt, B. V.K.J. (2019) Water-in-water pickering emulsion stabilized by polydopamine particles and cross-linking. Biomacromolecules, 20(1), pp. 204-211. (doi: 10.1021/acs.biomac.8b01301) (PMID:30395449)

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All aqueous multiphase systems have attracted significant attention recently, in particular water-in-water Pickering emulsions. In here, polydopamine nanoparticles (PDP) are investigated as stabilizers for dextran and poly(ethylene glycol) (PEG)-based aqueous emulsions. Remarkably, stable emulsions are obtained from the all-biocompatible materials that can be broken either via dilution or surfactant addition. Further cross-linking of PDP via poly(acrylic acid) and carbodiimide strengthens the stability of emulsion droplets in a colloidosome-like structure. After cross-linking, demulsification via dilution or surfactant addition was largely hindered. The PDP-mediated formation of all aqueous emulsions is expected to be generalized to different types of water-in-water emulsions with other polymers and offers new opportunities in surface modification as well as microencapsulation.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Schmidt, Dr Bernhard
Authors: Zhang, J., Hwang, J., Antonietti, M., and Schmidt, B. V.K.J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Biomacromolecules
Publisher:American Chemical Society
ISSN (Online):1526-4602
Published Online:05 November 2018

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