The Study and Comparison of Properties of Papers Made from the CMP Pulp of Imported Birch and CMP Pulp of Beech and Horn Beam

In this study, the birch beech and horn beam woods were randomly selected from the Mill wood and pulp industry of Mazandaran, from which the chips were prepared, and the pure CMP pulp by 85% yield was prepared according to TAPPI standard tests. Then the fiber biometric traits, the chemical components of wood flour and CMP pulp, the percentage of reduction of their chemical components and handsheet properties were measured and statistically analyzed. The results showed that the fiber length of imported birch is less than the horn beam but more than the beech. The fiber diameter and cell pit were greater and the cell wall thickness is smaller than the beech and horn beam. The chemical components of the imported birch wood have the smallest klason lignin and the greatest holocellulose. The handsheet properties of CMP pulp produced from the species under the study showed that the bursting strength and breaking length of the papers made from the beech and horn beam woods were lower than the birch wood.