Preparation and characterization of novel cellular/nonporous foam structures derived from tannin furanic resin

Recently, tannin furanic resin-based foams exhibiting excellent properties have been developed. However, its friability and thermal insulation must be improved prior to industrialization. Therefore, the tannin preconcentrate from wood bark obtained via liquefaction was mixed with furfuryl alcohol in the presence of a catalyst, surfactant, and solvent. This process includes instant in situ formation of a resin matrix, followed by spontaneous...