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首页> 外文期刊>Advanced Materials >Preorganized Hydrogel: Self-Healing Properties of Supramolecular Hydrogels Formed by Polymerization of Host-Guest-Monomers that Contain Cyclodextrins and Hydrophobic Guest Groups
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Preorganized Hydrogel: Self-Healing Properties of Supramolecular Hydrogels Formed by Polymerization of Host-Guest-Monomers that Contain Cyclodextrins and Hydrophobic Guest Groups

机译：预组织的水凝胶：由包含环糊精和疏水客体基团的客体-单体聚合形成的超分子水凝胶的自愈特性

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摘要

Self-healing and self-repairing materials have attracted much attention due to an improvement in the life-time of materials. Recently, the development of self-healing materials has become a central issue in polymer chemistry. Conventional polymers have difficulty in self-healing because they do not reform cova-lent bonds and their cut-surfaces do not re-adhere unless specific groups are introduced into the polymeric materials. There are three methods to create self-healing materials, such as the storage of healing agents, reversible covalent bond formation with external stimuli, and the construction of healing materials by non-covalent bonds. Healing agent storage methods effectively produce self-healing materials by using hollow fibers, particles, and microcapsules. Reversible covalent bond systems formed using the Diels-Alder reaction and the interconversion between disulfide groups and thiols have a healing ability for re-mendable polymers with external stimuli. More recently, dynamic equilibria between propagating radicals and dormant covalent species in controlled free-radical polymerizations have realized photoinduced self-healing of pho-toresponsive covalently crosslinked polymers.
机译：自修复和自修复材料由于其使用寿命的延长而备受关注。最近，自愈材料的发展已成为聚合物化学中的中心问题。常规的聚合物难以自我修复，因为它们不能重整多孔键，并且除非将特定的基团引入到聚合物材料中，否则它们的切面不会重新粘附。有三种创建自我修复材料的方法，例如存储治疗剂，与外部刺激形成可逆的共价键，以及通过非共价键构建治疗材料。修复剂储存方法通过使用中空纤维，颗粒和微囊有效地产生自修复材料。使用Diels-Alder反应形成的可逆共价键系统以及二硫键和硫醇之间的相互转化，对于具有外部刺激的可修复聚合物具有修复能力。最近，在受控的自由基聚合反应中，自由基与休眠共价物种之间的动态平衡已经实现了光响应性的光响应性共价交联聚合物的自我修复。

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  • 来源
    《Advanced Materials》 |2013年第20期|2849-2853|共5页
  • 作者

    Takahiro Kakuta; Yoshinori Takashima; Masaki Nakahata; Miyuki Otsubo; Hiroyasu Yamaguchi; Akira Harada;

  • 作者单位

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan;

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan;

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan;

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan;

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan;

    Department of Macromolecular Science Graduate School of Science Osaka University Toyonaka, Osaka, 560-0043, Japan,Core Research for Evolutional Materials Science and Technology (CREST) Japan Science and Technology Agency (JST) Sanban-cho Building, 4F, 5 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, Japan;

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