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Mechanically robust, intrinsically self-healing crosslinked polymer enabled by dynamic urea bond exchange reaction
Smart Materials and Structures ( IF 4.1 ) Pub Date : 2020-10-07 , DOI: 10.1088/1361-665x/abb574
Zhongqun Zhou 1 , Yanning Zeng 1 , Caili Yu 2 , Haibo Chen 1 , Faai Zhang 1
Affiliation  

Designing a crosslinked polymer with self-healing, recyclable, and mechanical properties is a significant challenge in the field of self-healing chemistry. Herein, robust, intrinsically self-healing, crosslinked polyureas (C-PUs) are prepared via a facile one-pot photo-induced copolymerization to address the aforementioned limitation. The key strategy involves the introduction of a synthetic monomer with reversible urea bonds into the polymer network as a versatile dynamic crosslinker. The resultant C-PUs are a class of resource-saving materials with a combination of excellent intrinsic self-healing capability with outstanding mechanical robustness. Notably, the properties of the materials can be easily tuned by simply adjusting the dynamic crosslinker content. In addition, an environmentally friendly polymer reprocessing is achieved and the potential of the materials in the smart anticorrosion application is investigated. These desirable properties are attributed to the underly...

中文翻译:

通过动态脲键交换反应实现机械坚固,本质上自修复的交联聚合物

设计具有自修复,可回收和机械性能的交联聚合物是自修复化学领域的重大挑战。在本文中,通过一种容易的一锅光诱导的共聚反应制备了坚固的,本质上自我修复的交联聚脲(C-PU),以解决上述限制。关键策略涉及将具有可逆脲键的合成单体作为通用的动态交联剂引入到聚合物网络中。最终的C-PU是一类节省资源的材料,具有出色的固有自愈能力和出色的机械强度。值得注意的是,通过简单地调节动态交联剂的含量,可以容易地调节材料的性能。此外,实现了对环境友好的聚合物后处理,并研究了该材料在智能防腐应用中的潜力。这些理想的属性归因于...
更新日期:2020-10-08
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