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A Bio‐Inspired and Biomass‐Derived Healable Photochromic Material Induced by Hierarchical Structural Design
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-10-21 , DOI: 10.1002/mame.201900539 Bo Wu 1 , Yuan Lei 1 , Yao Xiao 2 , Yanjun Wang 1 , Ye Yuan 1 , Liang Jiang 1 , Xi Zhang 1 , Jingxin Lei 1
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2019-10-21 , DOI: 10.1002/mame.201900539 Bo Wu 1 , Yuan Lei 1 , Yao Xiao 2 , Yanjun Wang 1 , Ye Yuan 1 , Liang Jiang 1 , Xi Zhang 1 , Jingxin Lei 1
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Utilization of bionics to develop stimuli responsive polymers that can heal damage with excellent restorability is particularly attractive for a sustainable society. Herein, inspired by chameleons, a hierarchical structural design strategy is proposed and illustrated to fabricate a healable photochromic material based on a self‐healable polymeric matrix and a finely dispersed photochromic spirooxazine. The self‐healable polymeric matrix is fabricated via the integration of multiple hydrogen bonds (H bonds) and covalent cross‐links into a biomass‐derived elastomer. The dynamic nature and soft characteristics enable the as‐prepared elastomer superior extensibility as well as self‐healing ability, while the covalent cross‐links can assist the reassociation of ruptured H bonds. The representative elastomer exhibits an extensibility of 2600% and toughness of 42.76 MJ m−3. Furthermore, it shows good self‐healing ability with complete recovery of scratch as well as restoration against 1900% of elongation and 24.1 MJ m−3 of toughness after healing at 60 °C for 24 h. This combination of moderate toughness, good self‐healing ability, and smart photochromic property in biomass‐derived materials should largely improve their applicability, reliability, and sustainability in various materials and devices.
中文翻译：
分层结构设计诱导的生物启发性和生物质衍生的可修复光致变色材料
利用仿生学开发出能够以优异的可修复性治愈损伤的刺激响应性聚合物，对于可持续发展的社会尤其具有吸引力。在此，受变色龙的启发，提出并举例说明了一种分层结构设计策略，以基于可自我修复的聚合物基体和精细分散的光致变色螺恶嗪制备可修复的光致变色材料。可自我修复的聚合物基质是通过将多个氢键（H键）和共价交联集成到生物质衍生的弹性体中而制成的。动态特性和柔软特性使所制备的弹性体具有出色的可延展性和自我修复能力，而共价交联则可以帮助断裂的H键重新结合。−3。此外，它具有良好的自我修复能力，可以在60°C固化24小时后完全恢复划痕，并恢复1900％的伸长率和24.1 MJ m -3的韧性。适度的韧性，良好的自我修复能力以及生物质衍生材料的智能光致变色特性的结合应大大改善其在各种材料和设备中的适用性，可靠性和可持续性。
更新日期：2020-01-15
中文翻译：
分层结构设计诱导的生物启发性和生物质衍生的可修复光致变色材料
利用仿生学开发出能够以优异的可修复性治愈损伤的刺激响应性聚合物，对于可持续发展的社会尤其具有吸引力。在此，受变色龙的启发，提出并举例说明了一种分层结构设计策略，以基于可自我修复的聚合物基体和精细分散的光致变色螺恶嗪制备可修复的光致变色材料。可自我修复的聚合物基质是通过将多个氢键（H键）和共价交联集成到生物质衍生的弹性体中而制成的。动态特性和柔软特性使所制备的弹性体具有出色的可延展性和自我修复能力，而共价交联则可以帮助断裂的H键重新结合。−3。此外，它具有良好的自我修复能力，可以在60°C固化24小时后完全恢复划痕，并恢复1900％的伸长率和24.1 MJ m -3的韧性。适度的韧性，良好的自我修复能力以及生物质衍生材料的智能光致变色特性的结合应大大改善其在各种材料和设备中的适用性，可靠性和可持续性。
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