Tasker, AL, Puttick, S, Hitchcock, J orcid.org/0000-0003-2226-6734 et al. (4 more authors) (2018) A two-step synthesis for preparing metal microcapsules with a biodegradable polymer substrate. Journal of Materials Chemistry B, 6 (14). pp. 2151-2158. ISSN 2050-750X
Abstract
Metal microcapsules have recently received attention and are being developed as improved carrier materials when compared to polymer microcapsules. In this work we have developed a novel, simplified method by which polymeric microcapsules can be synthesised using a combination of poly(vinyl pyrrolidone)-stabilised platinum nanoparticles (PVP-Pt) and poly(vinyl pyrrolidone) (PVP) as stabilisers, to allow for a secondary metal shell to be grown. We investigate the relationship between the molar ratio of reducing agent to platinum salt and the size of the resulting NPs and seek to develop further fundamental understanding of the factors governing the secondary metal shell thickness and quality, to allow production of cost-effective metal microcapsules without sacrificing core retention efficiency. We found that the size of the nanoparticles had no significant effect on secondary shell thickness, but did affect the quality of the resulting gold shells. Gold salt concentration was found to be a limiting factor in the electroless deposition of the metal shell. In this work, we have successfully produced PLGA microcapsules with more cost-effective gold shells, as thin as 56 ± 13 nm and capable of complete core retention of volatile actives.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | (c) The Royal Society of Chemistry 2018. This is an author produced version of a paper published in Journal of Materials Chemistry B. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 Apr 2018 11:09 |
Last Modified: | 21 Mar 2019 01:41 |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Identification Number: | 10.1039/c8tb00348c |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:130050 |