Show simple item record

dc.contributor.authorLi, Jianyu
dc.contributor.authorIlleperuma, Widusha Ruwangi Kaushalya
dc.contributor.authorSuo, Zhigang
dc.contributor.authorVlassak, Joost J.
dc.date.accessioned2015-02-03T21:19:12Z
dc.date.issued2014
dc.identifierQuick submit: 2015-01-25T15:05:26-05:00
dc.identifier.citationLi, Jianyu, Widusha R. K. Illeperuma, Zhigang Suo, and Joost J. Vlassak. 2014. “Hybrid Hydrogels with Extremely High Stiffness and Toughness.” ACS Macro Lett. (May 19): 520–523. doi:10.1021/mz5002355.en_US
dc.identifier.issn2161-1653en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:13910151
dc.description.abstractThe development of hydrogels for cartilage replacement and soft robotics has highlighted a challenge: load-bearing hydrogels need to be both stiff and tough. Several approaches have been reported to improve the toughness of hydrogels, but simultaneously achieving high stiffness and toughness remains difficult. Here we report that alginate-polyacrylamide hydrogels can simultaneously achieve high stiffness and toughness. We combine short- and long-chain alginates to reduce the viscosity of pregel solutions and synthesize homogeneous hydrogels of high ionic cross-link density. The resulting hydrogels can have elastic moduli of ∼1 MPa and fracture energies of ∼4 kJ m–2. Furthermore, this approach breaks the inverse relation between stiffness and toughness: while maintaining constant elastic moduli, these hydrogels can achieve fracture energies up to ∼16 kJ m–2. These stiff and tough hydrogels hold promise for further development as load-bearing materials.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Society (ACS)en_US
dc.relation.isversionofdoi:10.1021/mz5002355en_US
dc.relation.hasversionhttp://www.seas.harvard.edu/suo/papers2/322.pdfen_US
dash.licenseOAP
dc.subjecthydrogelsen_US
dc.subjectfracture mechanicsen_US
dc.subjecttoughnessen_US
dc.subjectstiffnessen_US
dc.subjectmechanical propertiesen_US
dc.titleHybrid Hydrogels with Extremely High Stiffness and Toughnessen_US
dc.typeJournal Articleen_US
dc.date.updated2015-01-25T20:05:25Z
dc.description.versionAccepted Manuscripten_US
dc.rights.holderJianyu Li, Widusha R.K. Illeperuma, Zhigang Suo and Joost J. Vlassak
dc.relation.journalACS Macro Lettersen_US
dash.depositing.authorSuo, Zhigang
dc.date.available2015-02-03T21:19:12Z
dc.identifier.doi10.1021/mz5002355*
dash.contributor.affiliatedIlleperuma, Widusha
dash.contributor.affiliatedLi, Jianyu
dash.contributor.affiliatedSuo, Zhigang
dash.contributor.affiliatedVlassak, Joost


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record