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Facile, Energy Efficient Microscale Fibrillation of Polyacrylamides under Ambient Conditions.

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cam.depositDate2022-04-19
cam.issuedOnline2022-04
dc.contributor.authorCruz, Menandro
dc.contributor.authorShah, Darshil
dc.contributor.authorWarner, Nina C
dc.contributor.authorMcCune, Jade
dc.contributor.authorScherman, Oren
dc.contributor.orcidCruz, Menandro [0000-0003-4274-8781]
dc.contributor.orcidShah, Darshil [0000-0002-8078-6802]
dc.contributor.orcidWarner, Nina C [0000-0002-6863-9156]
dc.contributor.orcidMcCune, Jade [0000-0001-5048-2683]
dc.contributor.orcidScherman, Oren [0000-0001-8032-7166]
dc.date.accessioned2022-06-03T23:30:14Z
dc.date.available2022-06-03T23:30:14Z
dc.date.issued2022-04-01
dc.date.updated2022-04-19T21:27:36Z
dc.description.abstractInsight into fibre formation can provide new rationale for the design and preparation of fibres with programmed mechanical properties. While synthetic bioinspired fibres have shown impressive tensile properties, the fibre formation process remains poorly understood. Moreover, these systems are highly complex and their formation is environmentally and economically costly. We demonstrate controlled fibre formation under ambient conditions from polyacrylamide solutions with properties comparable to natural fibres such as wool and coir. Photopolymerization and subsequent microscale fibrillation of different acrylamides in water/ethanol mixtures a simple yields an energy-efficient route to fibre formation. This strategy reduces required processing energy by two-to-three orders of magnitude. Through extensive experimental elucidation, insight into precise fibre forming conditions of polymeric solutions was achieved. Ethanol was utilized as a chain transfer agent to control molecular weight of the polyacrylamides and the entanglement regimes of the solutions were determined through rheological characterization showing fibre formation above the entanglement concentration. Unique from previously reported hydrogel microfibres, we have shown that we can obtain fibres with good mechanical properties without the need for composites or crosslinkers. The reported approach offers a platform for fibre formation under ambient conditions with molecular level understanding of their assembly. This article is protected by copyright. All rights reserved.
dc.description.sponsorshipEuropean Research Council (CAM-RIG Grant agreement ID: 72640)
dc.format.mediumPrint-Electronic
dc.identifier.doi10.17863/CAM.85105
dc.identifier.eissn1521-4095
dc.identifier.issn0935-9648
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/337699
dc.language.isoeng
dc.publisherWiley
dc.publisher.departmentDepartment of Chemistry
dc.publisher.departmentFaculty of Architecture And History of Art
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectentanglement
dc.subjectfree-radical photopolymerization
dc.subjectlow-energy process
dc.subjectpolyacrylamide
dc.subjectsynthetic fibre
dc.titleFacile, Energy Efficient Microscale Fibrillation of Polyacrylamides under Ambient Conditions.
dc.typeArticle
dcterms.dateAccepted2022-03-01
prism.publicationDate2022
prism.publicationNameAdv Mater
prism.startingPagee2201577
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
pubs.licence-identifierapollo-deposit-licence-2-1
rioxxterms.typeJournal Article/Review
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1002/adma.202201577

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