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Nanophase Separation in Immiscible Double Network Elastomers Induces Synergetic Strengthening, Toughening, and Fatigue Resistance

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Title: Nanophase Separation in Immiscible Double Network Elastomers Induces Synergetic Strengthening, Toughening, and Fatigue Resistance
Authors: Zheng, Yong Browse this author
Kiyama, Ryuji Browse this author
Matsuda, Takahiro Browse this author
Cui, Kunpeng Browse this author →KAKEN DB
Li, Xueyu Browse this author
Cui, Wei Browse this author
Guo, Yunzhou Browse this author
Nakajima, Tasuku Browse this author →KAKEN DB
Kurokawa, Takayuki Browse this author →KAKEN DB
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: 11-May-2021
Publisher: American Chemical Society(ACS)
Journal Title: Chemistry of Materials
Volume: 33
Issue: 9
Start Page: 3321
End Page: 3334
Publisher DOI: 10.1021/acs.chemmater.1c00512
Abstract: High modulus, toughness, and fatigue resistance are usually difficult to be obtained simultaneously in rubbery materials. Here, we report that by superimposing the nanophase separation structure in double network (DN) elastomers using immiscible polymers, the modulus, fracture energy, and energy release rate of fatigue threshold are enhanced all together by 13, 5, and 5 times, respectively. We reveal that the interplay between the DN structure and the nanophase separation structure brings two effects synergistically: (1) formation of nanoclusters overstresses and homogenizes the sacrificial network, thereby remarkably increasing the modulus and yielding stress and (2) the nanoclusters act as viscoelastic nanofillers dissipating energy and pinning the crack propagation, thereby significantly enhancing toughness and fatigue resistance. This work provides a facile approach to superimpose high-order structures in DN materials for excellent mechanical performance. The clarified synergetic effects should be universal for DN materials made of immiscible polymers. We believe that this work will facilitate more studies on elastomers and gels along this line.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of materials, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see insert ACS Articles on Request author-directed link to Published Work, see
Type: article (author version)
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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