Since furan ring, which is only produced from biomass and not from fossil resources, endows polymer with unique properties, bifurfural, which contains two furan rings, is of significant interest as a bio-based building block. We polymerized bifurfural with several diamines using an environmentally benign process, and the chemical structures of the poly(Schiff base)s were characterized. <sup>1</sup>H NMR, IR, and MALDI-TOF-MS spectra of the poly(Schiff base)s reveal that they are composed of mixtures of linear and cyclic structures. UV-vis spectroscopy and molecular orbital theory confirm the extended π-conjugation. Poly(Schiff base)s were molded at 120 °C into films that exhibited good strengths and were tough to bend. These results indicate that bifurfural-based poly(Schiff base)s are promising bio-based materials.

Synthesis and characterization of bio-based poly(Schiff-base) composed of bifurfural

2019 Spring National Meeting

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