Adhesion between the Anionic and the Cationic Gels, and Its Intimate Correlation to the Hardening of Amphoteric Gels(Mechanical Behavior of Materials 1)
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概要
- 論文の詳細を見る
Adhesion between the anionic and the cationic gels were observed. This adhesion force varies according to the pH and the ion strength of the solutions bathing the gels. It exhibits the quite strong adhesion in the neutral and lower ion strength solution, but it decays in the highly acidic or basic and higher ion strength solution and even comes to exhibit no adhesion at all. The cause of this adhesion phenomenon was proved to be primarily due to the electrostatic interaction between the anionic and the cationic fixed groups contained in the respective gels. That is, the formation of the salt-linkages between the dissociated -COOH and -NH_2 groups, which are -COO^-…^+H_3N-. They were found in the amphoteric gels, too, and proved to play a role of the reinforcement of the gels hardness. They work as the crosslinkings in the gels in addition to the permanently formed chemical crosslinkings consisting of N,N-methylenebisacrylamide. The degree of the reinforcement (the formation of the salt-linkages) can be controlled reversibly by their formation and disruption with the control of temperature or the pH or the ion strength of the bathing solution. Namely, the amphoteric gels hardness can be controlled reversibly without permanently modifying the gel's molecular structure. Since the reversible hardness change is also observed in the real human muscle, the reversible harness control by the use of the salt-linkage is the promising method to realize the gel artificial muscles.
- 一般社団法人日本機械学会の論文
- 2001-10-20
著者
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Nogata Fumio
Department Of Mechanical And Systems Engineering Faculty Of Engineering Gifu University
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TAMAGAWA Hirohisa
Department of Biomolecular Engineering, Tokyo Institute of Technology
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Popovic Suzana
Department Of Mechanical Engineering University Of Washington
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Umemoto S
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Umemoto Susumu
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Tamagawa Hirohisa
Department Of Mechanical And Systems Engineering Faculty Of Engineering Gifu University
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Tamagawa Hirohisa
Department Of Biomolecular Engineering Tokyo Institute Of Technology
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TAYA Minoru
Department of Mechanical Engineering, University of Washington
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YAGI Kazuto
Department of Material Science and Bioengineering, Mechanical Engineering Laboratory AIST
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SASAKI Shinya
MITI
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OKUI Norimasa
MITI
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Taya Minoru
Department Of Materials Processing Faculty Of Engineering Tohoku University
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Yagi Kazuto
Department Of Material Science And Bioengineering Mechanical Engineering Laboratory Aist
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