PSI - Issue 52

Mayu Morita et al. / Procedia Structural Integrity 52 (2024) 195–202 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

197

3

(a) Lignin (EL)

8

(b) PEG-lignin (EGL)

(a) Without functional groups

(b) With fungtional froups -OH

(c) With functional groups -O Fig. 1 molecular structures of lignins and graphene sheets