Investigation on Physical Properties and Fiber Biometry Variation in Bamboo Longitudinal Direction

In this study, six samples were taken randomly from bamboo stem in Nowshahr Forest. from each stem , three disks with interval of L/3 of the stem length were separated . Samples were used to measure the Physical Properties and Fiber Biometry. The data were statically analyzed in the stem longitudinal directions. The experimental results show that the amount of oven dried density, basic density, shrinkage and swelling have increased toward middle disk in the stem longitudinal direction and then decreased. the higher of amount parameters is observed in the middle disk and the least in the lower disk of the bamboo stem. in that , the amounts of fiber length, diameter and EMC are increased in the longitudinal direction while the amount of porosity is declined towards the crown. the average amount oven dried density, basic density, shrinkage, poropsity, EMC, fiber length and runkel coefficient were calculated at 0.632, 0.594,21.28 ,57.83,15.28 ,1675 and 353.4 respectively.