dc.contributor.author | Kanellopoulos, A. | |
dc.contributor.author | Giannaros, P. | |
dc.contributor.author | Palmer, D. W. | |
dc.contributor.author | Kerr, Maeve A. | |
dc.contributor.author | Al-Tabbaa, A. | |
dc.date.accessioned | 2018-03-01T17:01:24Z | |
dc.date.available | 2018-03-01T17:01:24Z | |
dc.date.issued | 2017-03-14 | |
dc.identifier.citation | Kanellopoulos , A , Giannaros , P , Palmer , D W , Kerr , M A & Al-Tabbaa , A 2017 , ' Polymeric microcapsules with switchable mechanical properties for self-healing concrete : Synthesis, characterisation and proof of concept ' , Smart Materials and Structures , vol. 26 , no. 4 , 045025 . https://doi.org/10.1088/1361-665X/aa516c | |
dc.identifier.issn | 0964-1726 | |
dc.identifier.other | ORCID: /0000-0001-9278-2035/work/62751272 | |
dc.identifier.uri | http://hdl.handle.net/2299/19845 | |
dc.description | © 2017 IOP Publishing. This is an open access article, original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence https://creativecommons.org/licenses/by/3.0/ . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | |
dc.description.abstract | Microcapsules, with sodium silicate solution as core, were produced using complex coacervation in a double, oil-in-water-in oil, emulsion system. The shell material was a gelatin-acacia gum crosslinked coacervate and the produced microcapsules had diameters ranging from 300 to 700 μm. The shell material designed with switchable mechanical properties. When it is hydrated exhibits soft and 'rubbery' behaviour and, when dried, transitions to a stiff and 'glassy' material. The microcapsules survived drying and rehydrating cycles and preserved their structural integrity when exposed to highly alkaline solutions that mimic the pH environment of concrete. Microscopy revealed that the shell thickness of the microcapsules varies across their perimeter from 5 to 20 μm. Thermal analysis showed that the produced microcapsules were very stable up to 190 °C. Proof of concept investigation has demonstrated that the microcapsules successfully survive and function when exposed to a cement-based matrix. Observations showed that the microcapsules survive mixing with cement and rupture successfully upon crack formation releasing the encapsulated sodium silicate solution. | en |
dc.format.extent | 15 | |
dc.format.extent | 4387512 | |
dc.language.iso | eng | |
dc.relation.ispartof | Smart Materials and Structures | |
dc.subject | cement | |
dc.subject | concrete | |
dc.subject | construction materials | |
dc.subject | microcapsules | |
dc.subject | microencapsulation | |
dc.subject | self-healing | |
dc.subject | sodium silicate | |
dc.subject | Signal Processing | |
dc.subject | Atomic and Molecular Physics, and Optics | |
dc.subject | Civil and Structural Engineering | |
dc.subject | General Materials Science | |
dc.subject | Condensed Matter Physics | |
dc.subject | Mechanics of Materials | |
dc.subject | Electrical and Electronic Engineering | |
dc.title | Polymeric microcapsules with switchable mechanical properties for self-healing concrete : Synthesis, characterisation and proof of concept | en |
dc.contributor.institution | Materials and Structures | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Engineering and Technology | |
dc.contributor.institution | Centre for Engineering Research | |
dc.contributor.institution | Centre for Climate Change Research (C3R) | |
dc.contributor.institution | Centre for Future Societies Research | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=85016145564&partnerID=8YFLogxK | |
rioxxterms.versionofrecord | 10.1088/1361-665X/aa516c | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |