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Novel Developed Systems and Techniques Based on Double-Network Principle

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Title: Novel Developed Systems and Techniques Based on Double-Network Principle
Authors: Wu, Zi Liang Browse this author
Kurokawa, Takayuki Browse this author →KAKEN DB
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: Dec-2011
Publisher: Chemical Society of Japan
Journal Title: Bulletin of the Chemical Society of Japan
Volume: 84
Issue: 12
Start Page: 1295
End Page: 1311
Publisher DOI: 10.1246/bcsj.20110201
Abstract: The double-network hydrogels (DN gels), developed by our group in 2003, have attracted increasing attention due to their excellent mechanical performance and unique fracture mechanism. The anomalously large fracture energy of DN gels up to 2200 J/m2 originates from the specific combination of two networks with contrasting properties. The first brittle network serves as sacrificial bonds, which breaks into small clusters to efficiently disperse the stress around the crack tip into the surrounding damage zone, while the second ductile polymer chains act as hidden length, which extends extensively to sustain large deformation. The DN gels also exhibit good biocompatibility and low friction resistance. Owing to these superior properties, DN gels possess promising prospective in industrial and medicine fields, especially for load-bearing artificial soft tissues such as artificial cartilage. However, there are several critical problems limiting the practical applications of DN gels, such as how to produce tough artificial tissue with complex shapes or bond a gel to a solid substrate. To address these specific issues, we have developed new systems and techniques based on the DN principle. These achievements, including synthesis of ultrathin DN gels, bonding of one gel to another gel or solid substrate, free-shaping of DN gels, enhancing typical single network gels by creating a DN structure, will be briefly introduced in this account paper. We believe that these new techniques will substantially promote the practical applications of DN hydrogels and extent the DN principle to other systems.
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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