文章摘要
郭 坤,于 吉,李伟杰,王晓玲,雍 媛.基于主客体识别构筑自愈合材料的研究[J].西南民族大学自然科学版,2019,45(5):481-490
基于主客体识别构筑自愈合材料的研究
Research on the construction of self-healing materials based on host-guest inclusion
投稿时间:2019-05-21  修订日期:2019-06-25
中文关键词: 自愈合材料  主客体识别  环糊精
英文关键词: self-healing materials  host-guest recognition  cyclodextrin
基金项目:西南民族大学2018年校级大学生创新创业训练计划项目(X201810656225)
作者单位E-mail
郭 坤 西南民族大学药学院 guokunluohe@163.com 
于 吉 西南民族大学药学院 yujide@163.com 
李伟杰 西南民族大学化学与环境保护工程学院  
王晓玲 西南民族大学药学院  
雍 媛 西南民族大学化学与环境保护工程学院  
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中文摘要:
      自愈合材料可以修复其在外界环境因素作用下产生的局部创伤或微裂纹,故大大延长了材料的使用寿命,提高了材料使用过程中的安全稳定性。但是,研究中大多数是结构型自愈合材料,而功能型自愈合材料的工作还鲜有报道。因此,构筑一种功能性强,愈合速度快,机械性能和功能特性可同时修复,并且可实现多次愈合的功能材料仍是一个挑战。本文通过构筑五种不同类别的复合物材料,我们深入探讨了基于环糊精主客体识别构筑自愈合材料的愈合机理。研究表明,主客体相互作用在材料愈合过程中扮演着重要角色。材料的愈合效率与愈合条件、材料的吸湿性能、分子链的运动以及主客体之间的包合能力密切相关。研究结果为基于主客体识别的自愈合材料设计提供了有意义的理论指导和参考价值。
英文摘要:
      High-performance materials such as self-healing materials are stimulated by biological systems which invoke self-repair strategies to mitigate damage and reveal an autonomic healing response, which can lead to extension of materials’ lifetime and reduction of waste. In the past decade, great progress has been made on the research about the design of self-healing materials. Up to now, most works have been done on the self-healing structural materials, which restore their mechanical properties by mending the mechanical damage. Only few attempts have been made to materials which are able of restoring other functional properties. Therefore, the preparation of a material combining good mechanical elasticity, functional properties, and intrinsic self-healing ability with several times remains a great challenge. In order to understand the role of the polymer chain mobility and the CD-guest interactions in the self-healing process, we designed five kinds of self-healing composites to figure out the influential factors and provide theoretical guide for the design of CD-based self-healing materials. And through the construction of five types of composite materials: (1) PHEMA and SWCNT physical hybrid material PHEMA/ SWCNT, (2) hard material PAAm-SWCNT almost moisture absorption at room temperature, (3) moisture-absorbing hard material PHEMA-SWCNT at room temperature, (4) soft material PAAm-PBA-SWCNT which is not hygroscopic at room temperature, (5) hard material PMMA-SWCNT which is completely non-hygroscopic at room temperature. A preliminary exploration of the construction, design, mechanism and application of this self-healing material is carried out. This study provides a deeply understanding of mechanism for self-healing behavior, which is important for the development and applications of such self-healing materials.
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