Conventional rubber products, such as tires, seals, tubing, and damping systems are manufactured via a vulcanization process, which forms covalently crosslinked network structures and ensures mechanical robustness, thermal stability and chemical resistance. However, the covalent networks are permanent and these products cannot be reprocessed or reshaped, which makes vulcanised rubbers one of the major challenges facing waste management and the circular economy. To reduce waste pollution for products such as tires, conventional vulcanised rubbers must be replaced with reversibly crosslinked structures which are able to achieve mechanical robustness and chemical stability, whilst also being able to be reprocessed, reshaped, reused and recycled. State-of-the-art developments in supramolecular chemistry have shed light on a new generation of reprocessable elastomers and rubbers, which have the potential to tackle the long-standing issue of waste tire pollution. The introduction of dynamic covalent bonds or supramolecular interactions in traditional elastomers can produce reversibly crosslinked structures, where the synergy between the dynamic bonds in the network are carefully optimised to balance the ease of processing, mechanical properties, and structural stability. Furthermore, dynamic covalent bonds and supramolecular interactions can provide ‘living’ functions to elastomers, such as self-healing and stimuli-responsiveness. These properties can be further enhanced by the addition of nanofillers with tailored surface chemistry to provide a dual role as a dynamic crosslinker and reinforcing element. To create reprocessable and recyclable elastomers, the coupling of multiple dynamic interactions provides unlimited possibilities to optimise the structure and properties of recyclable rubbers. Here we critically overview the applications of dynamic chemistry in rubbers, with a focus on macromolecular design and strategies to balance the mechanical, functional (e.g. self-healing) and reprocessing properties.

常规的橡胶产品，例如轮胎，密封件，油管和减震系统，是通过硫化过程，形成共价交联的网络结构，并确保机械强度，热稳定性和耐化学性。但是，共价网络是永久性的，这些产品无法进行后处理或重塑，这使得硫化橡胶成为废物管理和循环经济面临的主要挑战之一。为了减少轮胎等产品的废物污染，必须用可逆的交联结构代替常规的硫化橡胶，该结构应具有机械强度和化学稳定性，同时还可以进行再加工，重塑，再利用和再循环。超分子化学的最新发展为新一代可再加工的弹性体和橡胶提供了亮光，这有可能解决长期存在的废轮胎污染问题。在传统的弹性体中引入动态共价键或超分子相互作用可产生可逆交联的结构，其中网络中动态键之间的协同作用经过仔细优化，以平衡加工的便利性，机械性能和结构稳定性。此外，动态的共价键和超分子相互作用可以为弹性体提供“活”的功能，例如自我修复和刺激反应性。这些特性可以通过添加具有特定表面化学性质的纳米填料来进一步增强，以提供作为动态交联剂和增强元素的双重作用。为了制造可再加工和可回收的弹性体，多种动态相互作用的耦合为优化可再生橡胶的结构和性能提供了无限可能。在这里，我们批判性地概述了动态化学在橡胶中的应用，重点是大分子设计和平衡机械，功能（例如自我修复）和后处理属性。