Expanding the Usage of Lignin in DLP 3D Printing by Optimized Synthesis and Processing Parameters.

Thus, the valorization of lignin for material development has become a clear trend, also considering that over 50 million tons of lignin are produced worldwide every year as a byproduct of biorefineries, of which only 2% is reused while 98% is used for energy production. , There are two options for incorporating lignin in resins for DLP 3D printing: introducing unmodified lignin as filler material or using lignin modified with polymerizable groups as an active macromer for photopolymerization.

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