In Fig. 3(a) and (b) the SEM photographs of untreated Beech at 500 magnification and P(AA/MMA) treated Beech at 2000 magnification are given, respectively.
Fig. 3(c) and (d) show the SEM photographs of untreated-Spruce at 2000 magnification and P(AA/AN) treated Spruce at 800 magnification.
Fig. 3b,c show that almost all the wood cell lumens are filled by impregnated (AA/MMA) and (AA/AN) monomer mixtures, respectively.
These microphotographs indicate the existence of a powerful interaction between P(AA/MMA), P(AA/AN) and wood samples.