M.C. Lagel1, A. Pizzi1,2, S. Giovando3, A. Celzard4
Journal of Renewable Materials, Vol.2, No.3, pp. 220-229, 2014, DOI:10.7569/JRM.2014.634113
Abstract With the depletion of fossil resources, tannin extracts can be a natural alternative to some synthetic
products. Hydrolysable chestnut tannin extracts have been used to partially replace phenol in PF resins
for phenolic rigid foams. Phenol-formaldehyde-chestnut tannin (PFT) phenolic foams were initially made
from copolymerized PFT resins of different molar ratio. The PFT foams so prepared were tested for thermal
conductivity, these being slightly worse than that of pure PF foams; and for mechanical and water absorption,
these two properties being better than those of pure PF foams. Indeed, PF resins represent an important
part of synthetic resins. They are… More >
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