@article {1571,
	title = { Pine (P. pinaster) and quebracho (S. lorentzii) tannin-based foams as green acoustic absorbers },
	journal = { INDUSTRIAL CROPS AND PRODUCTS },
	volume = {67},
	year = {2015},
	pages = {70-73},
	abstract = {<p>Open cells structure tannin-furanic foams prepared using two different types of tannins have been shown to give good sound absorption/acoustic insulation characteristics at medium and high frequencies (1000-4000 Hz) with coefficients of acoustic absorption of 0.85-0.97. Their acoustic absorption coefficient was lower 0.40-0.60 at lower frequencies (250-500 Hz). Compared with commercial foams, tannin-furanic foams have the same typical behavior of light porous materials. The more open-cell is the material the better is its sound absorption. Thicker samples absorb better at medium frequencies for all types of porous material tested.</p>},
	url = {https://hal.archives-ouvertes.fr/hal-01294760},
	author = {C. LACOSTE and M.C. BASSO and A. PIZZI and A. CELZARD and E.E. EBANG and N. GALLON and B. CHARRIER}
}
