It is clear that the mole of water uptake at equilibrium increases with increase in the percentage of wood flour (Table II). But, the increment is rather less, compared with that in untreated foamed composites. This decrement is due to the improved filler/matrix adhesion by the formation of either hydrogen bond or chemical bond that reduces the moisture which results in filler matrix debonding. It is also clear from Table II that as the temperature increases, the mole of water uptake at equilibrium also increases. This favors the fact that at higher temperature the activity of molecules increases, which results in higher water absorption. But, in case of steam, the penetrability is more, and therefore, the〖" Q" 〗_∞is more unlike at different temperatures.