bio-based material monomers refer to small molecule compounds prepared from renewable biomass resources (such as crops, vegetable oil, cellulose, lignin, microalgae, and even industrial by-products) through biological fermentation, enzyme catalysis, or green chemical conversion. As the" core building blocks "for the construction of bio-based polymer materials, they have at least two reaction sites, can be connected to each other like building blocks, and polymerize to form high-performance polymers such as bio-based polyamide (PA) and bio-based polyurethane (PU).

Compared with traditional petroleum-based monomers that are highly dependent on fossil fuels, bio-based monomers not only have excellent low-carbon footprint and environmentally friendly properties, but also can effectively promote the transformation of the materials industry from a "petroleum economy" to a "bio-economy". At present, with the rapid development of synthetic biology and metabolic engineering technology, the preparation of bio-based monomers is moving towards a greener and more efficient direction.

Nowadays, bio-based monomers and their derived materials have penetrated into many fields such as packaging, agriculture, textiles, automobiles, 3D printing and medical devices. Under the guidance of the "dual-carbon" goal and the global green and sustainable development strategy, bio-based monomers are gradually breaking the cost and environmental bottleneck of traditional chemicals, becoming an important development direction for new quality productivity and strategic emerging industries, and providing key technical support for the construction of a low-carbon circular economy.