بررسي تيمارپذيري چوب پالونيا با استفاده از تكنيك پليمريزاسيون

Investigation on Treatability of Paulownia wood using polymerization technique

Treatability of Paulownia wood was carried out using polymerization technique. The main aims of this study were: to determine the treability indices, the role of anatomical factors on fluid flow, flow in radial and tangential flows and comparative study of heart wood and sapwood treatability. The ends and tangential surfaces of some specimens and radial surfaces of the other samples were sealed to examine tangential and radial flows respectively. Specimen dimensions were 2.5*2.5*4cm. Monomeric styrene was chosen to impregnate the specimens. Adding the red dye to monomer before impregnation, the distribution of polymer among different ceel types examined using light microscopy. The results showed that the retention and depth penetration in tangential flow were greater than those in radial flow. No significant difference was observed between retention and penetration of sapwood and latewood. Distribution index in tangential flow was the same as in radial flow. Vessels were treated very weak in all flow directions due to blockage by tylosis; fibers were poorly treated and rays, as well as longitudinal parenchyma, were not treated at all, due to storage of food and deposited materials in their cell lumen.