Recent Progress on the 3D Printing of Dynamically Cross‐Linked Polymers

Abstract The utilization of dynamic cross‐linking represents a highly promising approach in addressing the escalating issues of plastic pollution and fossil resource consumption. Despite being extensively investigated over the past decade, various dynamically cross‐linked polymers (DCPs) predominantly remain confined to the realm of academic research. To serve as a valuable material for practical application, advanced processing is always essential for all kinds of materials. 3D printing (3DP) enables the creation of intricate shapes layer‐by‐layer without relying on molds, thus the integration of 3DP techniques with DCPs holds significant potential to enhance and expand the practical applicability of DCPs. Here, an overview of the fundamental principles underlying DCPs compatible 3DP techniques are provided, namely photocuring 3DP, extrusion‐based 3DP, and laser sintering‐based 3DP. Additionally, a comprehensive summary of representative research works that specifically focus on the application of DCPs in each respective 3DP technique is presented. The performance and dynamic mechanism involved in the corresponding printing process are thoroughly discussed and comprehensively reviewed. Finally, the existing challenges and issues pertaining to further enhancing 3D printability, performance, efficiency, etc., are extensively deliberated upon, while proposing potential directions to address these concerns.