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Extremely tough composites from fabric reinforced polyampholyte hydrogels

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Title: Extremely tough composites from fabric reinforced polyampholyte hydrogels
Authors: King, Daniel R. Browse this author
Sun, Tao Lin Browse this author
Huang, Yiwan Browse this author
Kurokawa, Takayuki Browse this author
Nonoyama, Takayuki Browse this author
Crosby, Alfred J. Browse this author
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: 1-Nov-2015
Publisher: Royal Society of Chemistry
Journal Title: Materials horizons
Volume: 2
Issue: 6
Start Page: 584
End Page: 591
Publisher DOI: 10.1039/c5mh00127g
Abstract: Ligaments are unique wet biological tissues with high tensile modulus and fracture stress, combined with high bending flexibility. Developing synthetic materials with these properties is a significant challenge. Hydrogel composites made from high stiffness fabrics is a strategy to develop such unique materials; however, the ability to produce these materials has proven difficult, since common hydrogels swell in water and interact poorly with solid components, limiting the transfer of force from the fabric to the hydrogel matrix. In this work, for the first time, we successfully produce extraordinarily tough hydrogel composites by strategically selecting a recently developed tough hydrogel that de-swells in water. The new composites, consisting of polyampholyte hydrogels and glass fiber woven fabrics, exhibit extremely high effective toughness (250 000 J m(-2)), high tear strength (similar to 65 N mm(-1)), high tensile modulus (606 MPa), and low bending modulus (4.7 MPa). Even though these composites are composed of water-containing, biocompatible materials, their mechanical properties are comparable to high toughness Kevlar/polyurethane blends and fiber-reinforced polymers. Importantly, the mechanical properties of these composites greatly outperform the properties of either individual component. A mechanism is proposed based on established fabric tearing theory, which will enable the development of a new generation of mechanically robust composites based on fabrics. These results will be important towards developing soft biological prosthetics, and more generally for commercial applications such as tear-resistant gloves and bulletproof vests.
Type: article
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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