TY  - EJOU
AU  - Basso, M.C. 
AU  - Pizzi, A. 
AU  - Celzard, A. 

TI  - Dynamic Foaming Behaviour of Polyurethane vs Tannin/ Furanic Foams
T2  - Journal of Renewable Materials

PY  - 2013
VL  - 1
IS  - 4
SN  - 2164-6341

AB  - : Simultaneously monitoring the variation of temperature, foam rising rate, internal foam pressure and 
dielectric polarisation, the latter being a direct measure of setting and curing of a thermosetting foam, has 
allowed the comparison of the dynamic variation of determinant parameters of polyurethane foams and 
of tannin/furanic foams of different formulation and characteristics. This monitoring provides a good 
description of the process and possible characteristics of the prepared foam and constitutes an invaluable tool 
for foam formulation. Such a comparison indicates that fundamental differences, but also similarities, exist 
between the foaming processes of the two classes of foam. The dynamics of the foams were compared for (i) 
a tannin/furanic foam formulation using formaldehyde and a low-boiling blowing agent (STD); (ii) a tannin/
furanic foam containing neither formaldehyde nor blowing agent (MN65)., (iii) the same as (i) but with the 
addition of a small proportion of surfactant (MN8’), and (4) a commercial PUR foam formulation.
KW  - Tannin foams
KW  -  furanic foams
KW  -  polyurethane foams
KW  -  foaming temperature
KW  -  dielectric polarisation
KW  -  foaming pressure
KW  -  foam rising rate
KW  -  foam curing
KW  -  simultaneous measure

DO  - 10.7569/JRM.2013.634125