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. 2021 Mar 26;16:2419–2441. doi: 10.2147/IJN.S303462

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© 2021 Kumar et al.

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Chemical transformation of lignin to introduce diverse functional group. Reproduced from Ganewatta MS, Lokupitiya HN, Tang C. Lignin biopolymers in the age of controlled polymerization. Polymers (Basel). 2019;11(7):1176. Creative Commons license and disclaimer available from: http://creativecommons.org/licenses/by/4.0/legalcode.¹⁸