Atomic and vibrational origins of mechanical toughness in bioactive cement during setting

Hdl Handle:
http://hdl.handle.net/10034/605458
Title:
Atomic and vibrational origins of mechanical toughness in bioactive cement during setting
Authors:
Tian, Kun V.; Yang, Bin; Yue, Yuan-Zheng; Bowron, Daniel T.; Mayers, Jerry; Donnan, Robert S.; Dobo-Nagy, Csaba; Nicholson, John W.; Greer, A. Lindsay; Chass, Gregory A.; Greaves, G. Neville; Fang, De-Cai
Abstract:
Bioactive glass ionomer cements (GICs) have been in widespread use for ~40 years in dentistry and medicine. However, these composites fall short of the toughness needed for permanent implants. Significant impediment to improvement has been the requisite use of conventional destructive mechanical testing, which is necessarily retrospective. Here we show quantitatively, through the novel use of calorimetry, terahertz (THz) spectroscopy and neutron scattering, how GIC’s developing fracture toughness during setting is related to interfacial THz dynamics, changing atomic cohesion and fluctuating interfacial configurations. Contrary to convention, we find setting is non-monotonic, characterized by abrupt features not previously detected, including a glass–polymer coupling point, an early setting point, where decreasing toughness unexpectedly recovers, followed by stress-induced weakening of interfaces. Subsequently, toughness declines asymptotically to long-term fracture test values. We expect the insight afforded by these in situ non-destructive techniques will assist in raising understanding of the setting mechanisms and associated dynamics of cementitious materials.
Affiliation:
Semmelweis University; University of Chester; Queen Mary University of London
Citation:
Tian, K. V., Yang, B., Yue, Y., Bowron, D. T., Mayers, J., Donnan, R. S., . . . Greaves, G. N. (2015). Atomic and vibrational origins of mechanical toughness in bioactive cement during setting. Nature Communications, 6. doi:10.1038/ncomms9631
Publisher:
Nature Publishing Group
Journal:
Nature Communications
Publication Date:
9-Nov-2015
URI:
http://hdl.handle.net/10034/605458
DOI:
10.1038/ncomms9631
Additional Links:
http://www.nature.com/ncomms/2015/151109/ncomms9631/abs/ncomms9631.html
Type:
Article
Language:
en
ISSN:
2041-1723
Appears in Collections:
Electronic and Electrical Engineering

Full metadata record

DC FieldValue Language
dc.contributor.authorTian, Kun V.en
dc.contributor.authorYang, Binen
dc.contributor.authorYue, Yuan-Zhengen
dc.contributor.authorBowron, Daniel T.en
dc.contributor.authorMayers, Jerryen
dc.contributor.authorDonnan, Robert S.en
dc.contributor.authorDobo-Nagy, Csabaen
dc.contributor.authorNicholson, John W.en
dc.contributor.authorGreer, A. Lindsayen
dc.contributor.authorChass, Gregory A.en
dc.contributor.authorGreaves, G. Nevilleen
dc.contributor.authorFang, De-Caien
dc.date.accessioned2016-04-15T12:32:48Zen
dc.date.available2016-04-15T12:32:48Zen
dc.date.issued2015-11-09en
dc.identifier.citationTian, K. V., Yang, B., Yue, Y., Bowron, D. T., Mayers, J., Donnan, R. S., . . . Greaves, G. N. (2015). Atomic and vibrational origins of mechanical toughness in bioactive cement during setting. Nature Communications, 6. doi:10.1038/ncomms9631en
dc.identifier.issn2041-1723en
dc.identifier.doi10.1038/ncomms9631en
dc.identifier.urihttp://hdl.handle.net/10034/605458en
dc.description.abstractBioactive glass ionomer cements (GICs) have been in widespread use for ~40 years in dentistry and medicine. However, these composites fall short of the toughness needed for permanent implants. Significant impediment to improvement has been the requisite use of conventional destructive mechanical testing, which is necessarily retrospective. Here we show quantitatively, through the novel use of calorimetry, terahertz (THz) spectroscopy and neutron scattering, how GIC’s developing fracture toughness during setting is related to interfacial THz dynamics, changing atomic cohesion and fluctuating interfacial configurations. Contrary to convention, we find setting is non-monotonic, characterized by abrupt features not previously detected, including a glass–polymer coupling point, an early setting point, where decreasing toughness unexpectedly recovers, followed by stress-induced weakening of interfaces. Subsequently, toughness declines asymptotically to long-term fracture test values. We expect the insight afforded by these in situ non-destructive techniques will assist in raising understanding of the setting mechanisms and associated dynamics of cementitious materials.en
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.urlhttp://www.nature.com/ncomms/2015/151109/ncomms9631/abs/ncomms9631.htmlen
dc.rightsAn error occurred on the license name.*
dc.rights.uriAn error occurred getting the license - uri.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCementen
dc.subjectGlassen
dc.subjectTHz vibrationsen
dc.titleAtomic and vibrational origins of mechanical toughness in bioactive cement during settingen
dc.typeArticleen
dc.contributor.departmentSemmelweis University; University of Chester; Queen Mary University of Londonen
dc.identifier.journalNature Communicationsen
dc.date.accepted2015-09-14en
or.grant.openaccessNoen
rioxxterms.funderxxen
rioxxterms.identifier.projectxxen
rioxxterms.versionAOen
rioxxterms.licenseref.startdate2016-05-15en
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