The effect of surfactant chain length on the morphology of poly(methyl methacrylate) microcapsules for fragrance oil encapsulation

Tasker, Alison Louise, Hitchcock, James Paul, He, Ling, Baxter, Elaine Alice, Biggs, Simon, and Cayre, Olivier Jean (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.

[img]
Preview
PDF (Published Version) - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (966kB) | Preview
View at Publisher Website: https://doi.org/10.1016/j.jcis.2016.08.0...
 
35
644


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.

Item ID: 73353
Item Type: Article (Research - C1)
ISSN: 1095-7103
Keywords: Encapsulation, Morphology, Polymeric microcapsules, Wetting
Copyright Information: © 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/).
Date Deposited: 25 Aug 2022 00:18
FoR Codes: 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340603 Colloid and surface chemistry @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences @ 50%
28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering @ 50%
Downloads: Total: 644
Last 12 Months: 7
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page