Internship opportunity at LGP2 - Feb-July 2026 - Lignin, the second most abundant natural biopolymer after cellulose, is the main renewable source of aromatic compounds and has great potential for the development of materials with antioxidant, antibacterial, and UV-blocking properties. However, its use remains limited due to its complex and heterogeneous structure, which influences its physicochemical properties and reactivity. Lignin functionalization (esterification) is one of the most widely studied approaches to improving its compatibility with different polymers and apolar matrices. Combining biocatalysis and mechanochemistry is a promising and environmentally friendly alternative, offering better selectivity for transforming lignin. Internship objective: to functionalize lignin using enzymes and mechanochemistry to develop new lignin-based materials.