Lignin-polybutadiene copolymers were synthesized and the impact of the synthetic methodology on their thermal response
and mechanical properties were investigated. Lignin (A-Lignin, W-Lignin, F-Lignin, 22 wt%) was reacted with carboxytelechelic polybutadiene (PBD(COOH)2, Mn 4200 g mol−1). F-LigninPBD(COOH)2 resulted in a solid derivative at room temperature and a free standing film could be fabricated (Fig. 4), while W-Lignin-PBD(COOH)2 formed a highly viscous liquid and