Lignin-derived 2-pyrone-4,6-dicarboxylic acid (PDC) was polymerized with various diols to produce biomass-based polyesters. The effects of alkylene spacer length on their thermal, crystalline, processability, and mechanical properties were systematically investigated. The biodegradation rate was found to correlate with the alkylene spacer length and the hydrophilicity of the polymers. Furthermore, the PDC-based polyesters exhibited strong adhesion to various metals, with adhesion strength increasing with PDC content. A maximum lap-shear strength of 15.26 MPa was achieved on aluminum.
- Yijie Jin
- Keiju Yoshida
- Tsuyoshi Michinobu