Lignin-grafting alternative copolymer of 3,4-dihydrocoumarin and epoxides as an active and flexible ingredient in sunscreen

Grafting modification of lignin via the ROP of biobased 3,4-dihydrocoumarin (DHC) and epoxides (EPO) results in a series of EHL- g -P(DHC- alt -EPO) with good anti-UV and antioxidation performance, and biocompatibility for potential as an active ingredient in sunscreen.