Tasker, AL, Hitchcock, JP, He, L et al. (3 more authors) (2016) The effect of surfactant chain length on the morphology of poly(methyl methacrylate) microcapsules for fragrance oil encapsulation. Journal of Colloid and Interface Science, 484. pp. 10-16. ISSN 0021-9797
Abstract
The solvent evaporation method for producing microcapsules relies upon the correct wetting conditions between the three phases involved in the synthesis to allow core-shell morphologies to form. By measuring the interfacial tensions between the oil, polymer and aqueous phases, spreading coefficients can be calculated, allowing the capsule morphology to be predicted. In this work we explore the effect of surfactant chain length on capsule morphology using poly(methyl methacrylate) as the polymer and hexadecane as the core. We compared the predicted morphologies obtained using the polymer as a solid, and the polymer dissolved in dichloromethane to represent the point at which capsule formation begins. We found that using the polymer in its final, solid form gave predictions which were more consistent with our observations. The method was applied to successfully predict the capsule morphologies obtained when commercial fragrance oils were encapsulated.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | (c) 2016, The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
Keywords: | Encapsulation; Morphology; Wetting; Polymeric microcapsules |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/K503836/1 Procter & Gamble . |
Depositing User: | Symplectic Publications |
Date Deposited: | 30 Sep 2016 09:00 |
Last Modified: | 23 Jun 2023 22:13 |
Published Version: | http://dx.doi.org/10.1016/j.jcis.2016.08.058 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jcis.2016.08.058 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105034 |