Hierarchical Supramolecular Cross-Linking of Polymers for Biomimetic Fracture Energy Dissipating Sacrificial Bonds and Defect Tolerance under Mechanical Loading

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Myllymäki, Teemu T. T.
dc.contributor.author Lemetti, Laura
dc.contributor.author Nonappa, Nonappa
dc.contributor.author Ikkala, Olli
dc.date.accessioned 2018-08-21T13:45:01Z
dc.date.available 2018-08-21T13:45:01Z
dc.date.issued 2017-02-15
dc.identifier.citation Myllymäki , T T T , Lemetti , L , Nonappa , N & Ikkala , O 2017 , ' Hierarchical Supramolecular Cross-Linking of Polymers for Biomimetic Fracture Energy Dissipating Sacrificial Bonds and Defect Tolerance under Mechanical Loading ' ACS MACRO LETTERS , vol 6 , no. 3 , pp. 210-214 . DOI: 10.1021/acsmacrolett.7b00011 en
dc.identifier.issn 2161-1653
dc.identifier.other PURE UUID: 6b469483-2c4b-4e26-834a-e68802b4287f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/hierarchical-supramolecular-crosslinking-of-polymers-for-biomimetic-fracture-energy-dissipating-sacrificial-bonds-and-defect-tolerance-under-mechanical-loading(6b469483-2c4b-4e26-834a-e68802b4287f).html
dc.identifier.other PURE LINK: http://dx.doi.org/10.1021/acsmacrolett.7b00011
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/33504
dc.description | openaire: EC/FP7/291364/EU//MIMEFUN
dc.description.abstract Biological structural materials offer fascinating models how to synergistically increase the solid-state defect tolerance, toughness, and strength using nanocomposite structures by incorporating different levels of supramolecular sacrificial bonds to dissipate fracture energy. Inspired thereof, we show how to turn a commodity acrylate polymer, characteristically showing a brittle solid state fracture, to become defect tolerant manifesting noncatastrophic crack propagation by incorporation of different levels of fracture energy dissipating supramolecular interactions. Therein, poly(2-hydroxyethyl methacrylate) (pHEMA) is a feasible model polymer showing brittle solid state fracture in spite of a high maximum strain and clear yielding, where the weak hydroxyl group mediated hydrogen bonds do not suffice to dissipate fracture energy. We provide the next level stronger supramolecular interactions toward solid-state networks by postfunctionalizing a minor part of the HEMA repeat units using 2-ureido-4[1H]-pyrimidinone (UPy), capable of forming four strong parallel hydrogen bonds. Interestingly, such a polymer, denoted here as p(HEMA-co-UPyMA), shows toughening by suppressed catastrophic crack propagation, even if the strength and stiffness are synergistically increased. At the still higher hierarchical level, colloidal level cross-linking using oxidized carbon nanotubes with hydrogen bonding surface decorations, including UPy, COOH, and OH groups, leads to further increased stiffness and ultimate strength, still leading to suppressed catastrophic crack propagation. The findings suggest to incorporate a hierarchy of supramolecular groups of different interactions strengths upon pursuing toward biomimetic toughening. en
dc.format.extent 5
dc.format.extent 210-214
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/FP7/291364/EU//MIMEFUN
dc.relation.ispartofseries ACS MACRO LETTERS en
dc.relation.ispartofseries Volume 6, issue 3 en
dc.rights closedAccess en
dc.subject.other 114 Physical sciences en
dc.title Hierarchical Supramolecular Cross-Linking of Polymers for Biomimetic Fracture Energy Dissipating Sacrificial Bonds and Defect Tolerance under Mechanical Loading en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201808214637
dc.identifier.doi 10.1021/acsmacrolett.7b00011


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