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dc.contributor.authorVereroudakis, E
dc.contributor.authorBantawa, M
dc.contributor.authorLafleur, RPM
dc.contributor.authorParisi, D
dc.contributor.authorMatsumoto, NM
dc.contributor.authorPeeters, JW
dc.contributor.authorDel Gado, E
dc.contributor.authorMeijer, EW
dc.contributor.authorVlassopoulos, D
dc.date.accessioned2020-12-14T06:29:53Z
dc.date.available2020-12-14T06:29:53Z
dc.date.issued2020-08-26
dc.identifier.citationVereroudakis, E., Bantawa, M., Lafleur, R. P. M., Parisi, D., Matsumoto, N. M., Peeters, J. W., Del Gado, E., Meijer, E. W. & Vlassopoulos, D. (2020). Competitive Supramolecular Associations Mediate the Viscoelasticity of Binary Hydrogels. ACS Central Science, 6 (8), pp.1401-1411. https://doi.org/10.1021/acscentsci.0c00279.
dc.identifier.issn2374-7943
dc.identifier.urihttp://hdl.handle.net/11343/254242
dc.description.abstractSupramolecular polymers are known to form strong and resilient hydrogels which can take up large amounts of water while exhibiting ease of processing and self-healing. They also possess similarities with networks of biological macromolecules. The combination of these features makes supramolecular polymers ideal candidates for studying mechanisms and consequences of self-assembly, which are relevant to biological materials. At the same time, this renders investigations of mixed hydrogels based on different supramolecular compounds necessary, since this substantially widens their applicability. Here, we address unusual viscoelastic properties of a class of binary hydrogels made by mixing fibrillar supramolecular polymers that are formed from two compounds: 1,3,5-benzene-tricarboxamide decorated with aliphatic chains terminated by tetra(ethylene glycol) (BTA) and a 20 kg/mol telechelic poly(ethylene glycol) decorated with the same hydrogen bonding BTA motif on both ends (BTA-PEG-BTA). Using a suite of experimental and simulation techniques, we find that the respective single-compound-based supramolecular systems form very different networks which exhibit drastically different rheology. More strikingly, mixing the compounds results in a non-monotonic dependence of modulus and viscosity on composition, suggesting a competition between interactions of the two compounds, which can then be used to fine-tune the mechanical properties. Simulations offer insight into the nature of this competition and their remarkable qualitative agreement with the experimental results is promising for the design of mixed hydrogels with desired and tunable properties. Their combination with a sensitive dynamic probe (here rheology) offer a powerful toolbox to explore the unique properties of binary hydrogel mixtures.
dc.languageEnglish
dc.publisherAmerican Chemical Society
dc.titleCompetitive Supramolecular Associations Mediate the Viscoelasticity of Binary Hydrogels
dc.typeJournal Article
dc.identifier.doi10.1021/acscentsci.0c00279
melbourne.affiliation.departmentChemical and Biomolecular Engineering
melbourne.source.titleACS Central Science
melbourne.source.volume6
melbourne.source.issue8
melbourne.source.pages1401-1411
melbourne.elementsid1462937
melbourne.openaccess.urlhttp://doi.org/10.1021/acscentsci.0c00279
melbourne.openaccess.statusPublished version
melbourne.contributor.authorLafleur, Rene
dc.identifier.eissn2374-7951
melbourne.accessrightsAccess this item via the Open Access location


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