We investigated the copolymerization of the biomass-derived monomers ferulic acid (FA) and glycine (Gly) to develop a highly thermostable aromatic-aliphatic poly(ester-amide). N-feruloylglycine methyl ester (FAMG), N-feruloylglycine (FAG), and N-(4-0-acetylferuloyl)glycine (AcFAG) were synthesized by amide coupling reactions between FA and the methyl ester of Gly, followed by protection/deprotection of the end groups. We attempted to polymerize the three types of monomers in bulk or solution state to a poly[(ferulic acid)-alt-(glycine)] (P(FA-alt-Gly)) alternate copoly(ester-amide) of FA and Gly. Only AcFAG yielded P(FA-alt-Gly) containing a high-molecular weight fraction of more than 10(4) g/mol. Poly(AcFAG) (PAcFAG) is an amorphous polymer with a glass transition temperature (Tg) of 189 degrees C, a 5% weight-loss temperature (T-d5%) of 297 degrees C, and a 50% weight-loss temperature (T-dso%) at 495 degrees C. (C) 2017 Elsevier Ltd. All rights reserved.