Density Matching for Microencapsulation of Field Responsive Suspensions of Non-Brownian Microparticles

Abstract

When forming composite microcapsules through the emulsification of a dispersed phase laden with microparticles, one will find that the microparticles become irreversibly embedded in the resulting microcapsule membrane. This phenomenon, known as Pickering stabilization, is detrimental when the end function of the microcapsules relies on the mobility of encapsulated microparticles within the capsule core. In this work, a robust microencapsulation route using density matching of non-Brownian microparticles in a binary solvent is shown to easily and effectively encapsulate particles, with >90% of particles retaining mobility within the microcapsules, without the necessity for prior chemical/physical modifications to the microparticles. This is proposed as a generalized method to be used for all manner of particle chemistries, shapes, and sizes.

Publication DOI: https://doi.org/10.1021/acs.jpcb.4c02288
Divisions: College of Engineering & Physical Sciences
Aston University (General)
Funding Information: Funding for this work was provided by the Applied Physics Laboratory, Johns Hopkins University.
Additional Information: Copyright © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Last Modified: 31 Mar 2025 07:27
Date Deposited: 27 Jan 2025 17:22
Full Text Link:
Related URLs: https://pubs.ac ... cs.jpcb.4c02288 (Publisher URL)
PURE Output Type: Article
Published Date: 2024-07-04
Published Online Date: 2024-05-15
Accepted Date: 2024-05-15
Authors: Wilson-Whitford, Samuel R. (ORCID Profile 0000-0001-6065-8451)
Gao, Jinghui
Gilchrist, James F.

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