A local damage model for anomalous high toughness of double-network gels

Tanaka, Y.

Europhysics Letters, 2007, 78(5), 56005

Permalink : https://hdl.handle.net/2115/28252

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アクセス権	open access
URI	https://hdl.handle.net/2115/28252
タイトル	A local damage model for anomalous high toughness of double-network gels
著者	著者名 Tanaka, Y.
言語	英語
発行日	2007
出版者	EDP Sciences
収録物名	Europhysics Letters
巻(号)	78(5)
ページ	56005
抄録	We present a phenomenological model for anomalously high fracture energy of double-network (DN) gels, which consist of a substantially cross-linked polyelectrolyte gel (first network) and of a quite poorly cross-linked neutral polymer (second network) penetrating into the first network (Gong J. P., Katsuyama Y., Kurokawa T. and Osada Y., Adv. Mater., 15 (2003) 1155). The model assumes that the material locally softens around crack tip due to damage of the first network, and then the crack extends within the softened zone. An order estimation indicates that energy dissipation by the softening greatly exceeds the "bare fracture energy" of the softened material, and that the effective fracture energy can reach the order of 100 J/m2. This is consistent with the experimental value ~400 J/m2.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0295-5075
EISSN	1286-4854
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1209/0295-5075/78/56005