Abstract
ABSTRACTDegradation products of lignin, a widely available biopolymer, represent the most abundant feedstock for aromatics in nature. In this work, we focused on syringic acid, derived from lignin S‐type monolignol, to synthesize different monomers for radical polymerization. The resulting polymers have molecular weight spanning over a wide range, which depends on the monomer, with up to Mn = 1,100,000 g.mol−1 and Đ = 3.0. The novel polymers exhibit a thermal stability higher than 350°C and differentiated glass transition temperatures, ranging from 105 to 120°C. One of the monomers synthesized with a free carboxyl group was able to polymerize in water—instead of organic solvent—and resulted in a water soluble polymer. Monomers from syringic acid offer a unique bio‐based alternative to oil‐based polystyrene in industry for a wider range of application. © 2020 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 540–547
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