M.C. Basso1,2, S. Giovando3, A. Pizzi2,4,*, M.C. Lagel2,3, A. Celzard5
Journal of Renewable Materials, Vol.2, No.3, pp. 182-185, 2014, DOI:10.7569/JRM.2013.634137
Abstract Condensed fl avonoid tannin foams were obtained under alkaline conditions. This entailed the elimination
of furfuryl alcohol from these formulations, as under alkaline conditions, foam preparation could not rely
on the heat generated by the self-condensation of furfuryl alcohol, which occurs only under strongly acidic
conditions. The approach used to formulate the alkaline foam was: (i) the total elimination of furfuryl alcohol
from the formulation, (ii) coupled with the use of an aldehyde hardener different from formaldehyde (for
environmental reasons) and (iii) the application of moderate heat to allow foaming. These were not tannin/
furanic More >
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