Fatima ALBarram(1)*, Maisaa Kakeh(1), Kheir Eddine KURDI(2), and Muhammad Zain Alddin(3)
(1). Dept. of Renewable Natural Resources and Environment, Faculty of Agriculture, University of Aleppo, Aleppo, Syria.
(2). Dept. of Engineering Materials Science, Faculty of Mechanical Engineering, University of Aleppo, Aleppo, Syria.
(3). Aleppo Chamber of Industry, Ministry of Industry, Aleppo, Syria.
(*Corresponding author: Fatima ALBarram, E. mail:alibarram20181992@gmail.com)
Received: 7/04/2021 Accepted:4/11/2021
Abstract:
The paper pulp industry is one of the important industries that depend on wood as raw material, as it does not need large logs, beside of the scarcity of forest areas in our country and its further deterioration, The research aim was to make paper pulp from brunches of Pinus and Eucalyptus trees resulting from the pruning process, in addition, to make paper paste mixture of both types of wood using the chemical Kraft method to extract the cellulosic fibers, where the cooking process was carried out using an autoclave at a pressure of 7-8 kg / cm2 for a period of 3 Hours, and the three doughs were tested (dough yield, density, soluble solids percentage, Kappa figure). A paper was made from paper pulp by sedimentation method and then the resulting papers were tested (moisture content, grammage, tensile strength, burst strength), and raw gelatin was added to each of the protein pine paste and eucalyptus paste, and then the resulting paper was tested and compared with the paper without adding gelatin, The results showed that the paper produced from the mixture of pine nuts and eucalyptus was superior to the paper manufactured from each of them separately, with the average tensile strength of 16.32 kN / m, while the average blast strength was 0.85 kg / cm2, The paper manufactured from eucalyptus and raw gelatin surpassed the paper manufactured without adding gelatin, as the average tensile strength was 18.11 kN / m, and the average burst strength was 0.85 kg / cm2, in addition to the Kappa number test, the highest value for it was in the protein paste of pine nuts, which was 5.72, These results show that the manufacture of paper pulp by mixing proportions of Pinus brutia (long fibers) with Eucalyptus camaldulensis (short fibers) and then adding gelatin, gives the best types of paper according to our experience and according to the properties tested.
Key words: Paper, Pulp, Kappa number, Kraft, Total soluble solids ratio.
Full paper in Arabic: pdf