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Revisiting the Origins of the Fracture Energy of Tough Double-Network Hydrogels with Quantitative Mechanochemical Characterization of the Damage Zone

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/87284

Title: Revisiting the Origins of the Fracture Energy of Tough Double-Network Hydrogels with Quantitative Mechanochemical Characterization of the Damage Zone
Authors: Matsuda, Takahiro Browse this author
Kawakami, Runa Browse this author
Nakajima, Tasuku Browse this author
Hane, Yukiko Browse this author
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: 23-Nov-2021
Publisher: American Chemical Society
Journal Title: Macromolecules
Volume: 54
Issue: 22
Start Page: 10331
End Page: 10339
Publisher DOI: 10.1021/acs.macromol.1c01214
Abstract: The high fracture energy of tough soft materials can be attributed to the large energy dissipation zone around the crack tip. Hence, quantitative characterization of energy dissipation is the key to soft matter fracture mechanics. In this study, we quantified the energy dissipation in the damage zone of a double-network (DN) hydrogel using a mechanochemical technique based on mechanoradical polymerization combined with confocal fluorescence microscopy. We found that, in addition to energy dissipation in a relatively narrow yield region, the dissipation in the wide preyielding region and the intrinsic fracture energy also has a large contribution to the fracture energy. Moreover, the fracture energy of a prestretched sample, in which the dissipative capacity is nearly depleted, suggests that the intrinsic fracture energy is higher than the fracture energy of the second network. These findings modify the previous understanding that the fracture energy of DN gels is dominated by the energy of the yielding zone formation.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-NTMZZIC6JF3IXUMVZWPZ.
Type: article (author version)
URI: http://hdl.handle.net/2115/87284
Appears in Collections:生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 龔 剣萍 (Gong Jian Ping)

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