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Self-Healing Behaviors of Tough Polyampholyte Hydrogels

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タイトル: Self-Healing Behaviors of Tough Polyampholyte Hydrogels
著者: Ihsan, Abu Bin 著作を一覧する
Sun, Tao Lin 著作を一覧する
Kurokawa, Takayuki 著作を一覧する
Karobi, Sadia Nazneen 著作を一覧する
Nakajima, Tasuku 著作を一覧する
Nonoyama, Takayuki 著作を一覧する
Roy, Chanchal Kumar 著作を一覧する
Luo, Feng 著作を一覧する
Gong, Jian Ping 著作を一覧する
発行日: 2016年 6月14日
出版者: American Chemical Society
誌名: Macromolecules
巻: 49
号: 11
開始ページ: 4245
終了ページ: 4252
出版社 DOI: 10.1021/acs.macromol.6b00437
抄録: Recently, polyampolytes have been discovered to form hydrogels that possess high toughness, full resilience, and self-healing between two cut surfaces. The self-healing of this class of hydrogels is based on the re-forming of the multiple ionic bonds at the fractured surfaces, in which the mobility of the polymer segments and strength of the ionic bonds play an important role. In this work, we study the effects of healing temperature and chemistry of the polyampholyte hydrogels (chemical cross-linker density and chemical structure of the monomers) on the healing kinetics and healing efficiency. The high healing temperature substantially accelerates the self-healing kinetics. Chemical cross-linking reduces the self-healing efficiency. Monomers with more hydrophobic feature give a low self-healing efficiency. For polyampholyte physical hydrogels with a softening temperature below the room temperature, excellent healing efficiency (∼84% on average and maximum 99%) was observed without any external stimuli. We found a correlation between the self-healing efficiency and the fraction of dynamic bonds in the total bonds for relatively soft samples, which is an evidence that the selfhealing is due to the re-forming of dynamic bonds.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright ©2016 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 龔 剣萍 (Gong Jian Ping)


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