ArticleBiomacromolecules2025
In Situ Photoresin Synthesis via Reactive Diluents for Vat Photopolymerization.
Article in Biomacromolecules, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors.
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Abstract
As climate change intensifies, there is a pressing demand for sustainable alternatives to fossil-derived photoresins in additive manufacturing. While biobased systems have been explored, many rely on hazardous solvents, limiting their environmental benefits. Here, we report a one-pot, purification-free strategy for synthesizing renewable, high-performance photoresins using furan-based monomers derived from lignocellulosic biomass. Furfuryl methacrylate and 4,4'-bismaleimidodiphenylmethane (BSM) were integrated into methacrylate networks via Diels-Alder (DA) chemistry, with 2-hydroxyethyl methacrylate (HEMA) enabling high conversion (93%) under optimized conditions. Mechanical testing revealed that UV postcuring enhanced tensile strength, whereas excessive UV or solvent exposure caused oligomer leaching. Thermal postcuring activated retro-DA reactions, improving mechanical robustness and shape memory performance. Comparative studies showed aromatic DA derivatives offered superior programmability, while aliphatic analogs provided higher renewable carbon content with stable printability. This scalable, solvent-free strategy establishes a green chemistry framework for sustainable, high-performance photoresins, advancing additive manufacturing toward circular economy objectives.
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