Bio-based vitrimers and covalent adaptable networks – a short review

Biobased vitrimers represent a new class of innovative materials that combine the recyclability of thermoplastics with the durability and mechanical strength of traditional thermosets, offering a promising solution for sustainable applications. This review paper systematically explores the mechanisms that enable key properties such as self-healing, reprocessing and recycling. A thorough examination of various biobased components, including lignin, vanillin, tannic acid, chitosan, cellulose and starch is provided, highlighting their potential as feedstocks for vitrimers. We show synthesis methods employed for each type of vitrimer, providing insights into their processing and performance characteristics. By presenting a comprehensive overview of current research, we aim to contribute to the understanding and future advancements in the field of biobased vitrimers, paving the way for their broader industrial application. • Bio-based vitrimers merge thermoplastic recyclability with thermoset durability to reduce plastic waste. • Lignin, vanillin, cellulose, chitosan etc. enable bio-vitrimers for sustainable use in transport and medical sectors. • Bio-based vitrimers enable self-healing, reprocessing and recycling via dynamic bond exchange for greener manufacturing.