Sustainably Sourced Dynamic Covalent Network Epoxy Thermosets and Composites: Synthesis, Performance, and Applications

The emergence of dynamic covalent network epoxy thermosets signifies a pivotal advancement in polymer science, connecting the gap between conventional thermosets and thermoplastics using the concept of dynamic covalent chemistry. These advanced materials exhibit a fruitful combination of vigorous mechanical properties, shape memory, recyclability, and self‐healing, empowered by covalent bond dynamics that facilitate topology rearrangement while preserving network integrity. This review thoroughly examines the up‐to‐date advancements in sustainably sourced dynamic covalent network epoxy systems, highlighting novel synthetic approaches that introduce renewable bio‐based monomers such as lignins, plant oils, furan derivatives, and other natural phenolics. The incorporation of distinct dynamic chemistries, including transesterification, disulfide exchange, imine metathesis, etc., within these polymeric networks not only advances the proficiency of these materials but also highlights their advanced features, such as balanced thermal and mechanical performance, durability, and catalysis‐free reprocessability. This review examines the synthesis, structure‐property relationships, and applications of sustainably sourced vitrimeric epoxy thermosets and composites, highlighting their role in advancing circular economy principles for high‐performance materials. Furthermore, emerging challenges and perspective directions are discussed, offering a strategic framework for expediting the development of multifunctional, sustainable, and industrially viable dynamic covalent network systems that address environmental governance with technological advancement.