Renewable polymers: Synthesis and characterization of poly(4-ketopimelic acid-glycerol)
Condensation polymerization of renewable resources-based monomers, 4-ketopimelic acid and glycerol, were studied using two different catalysts; p-toluenesulfonic acid and Sb2O3. The highest polymer yield of 96% was achieved by using a 3:4 mole ratio mixture of 4-ketopimelic acid and glycerol, with Sb2O3 (0.5 mol% relative to 4-ketopimelic acid) as catalyst and heating at 23-210°C, under N2 for 1 h; then 210°C, vacuum, 12 h. The poly(4-ketopimelic acid-glycerol) formed is insoluble in all common organic solvents and is shown to contain a branched polymeric structure with ketal and ester links by using FT-IR, 1H and 13C NMR spectroscopy.
Amarasekara, A., Hasan, M., & Larkin, E. (2017). Renewable polymers: Synthesis and characterization of poly(4-ketopimelic acid-glycerol). Retrieved from https://digitalcommons.pvamu.edu/chemistry-physics-facpubs/56