أبعاد الألياف لأشجار لسان الطير Single (Mill) altissima Ailanthus النامية في محافظة نينوى و تأثيرها في صناعة الورق

Three trees of Ailanthus altissima(Mill) Single with the age (5,6 and 15) years were used, and samples were taken as tablets with three heights for each tree after fixing the northern direction and taking from each tablet a section represents that direction, then from each height three equal pieces near the husk were taken, a separation process for each piece was made to fix their dimensions in the stem and for each tree, the fiber length was (1.27mlm) while the fiber diameter was (18.98mlm) also the thickness was (3.407 micron) and the average diameter of the fiber cavity was (12.4 micron) . while Rankel’s rate and the fiber length rate were (0,588 , 71.93) respectively, the results showed the validity of fibers of Ailanthus altissima(Mill) Single in manufacturing paper.