Document Type : Research Paper

Authors

• Abas Fakhryan ¹
• Hossein Hosseinkhani ²
• Fardad Golbabaei ³
• Mohammad mehdi Brazandeh ⁴

¹ M.Sc., Wood and Forest pruducts Research Division, Research Institute of Forests and Rangelands, Iran

² Wood Science & Forest Products Research Division Research Institute of Forests & Rangelands Tehran, Iran

³ Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO) P.O. Box 13185-116, Tehran, Iran

⁴ M.Sc., Wood and Forest pruducts Research Division, Research Institute of Forests and Rangelands

Abstract

In this Investigation chemical, physical, morphology, pulp and paper making characteristics of   Populus costanzo were studied. The average dry and critical specific gravity was found to be  0.39and 0.36 and the fiber morphology including fiber length  , diameter ,lumen and thickness of cell wall 1.14 mm,28.84 µm, 28 µm ,and 2.92 µm was determined respectively. The average chemical composition including cellulose 50.74%, lignin 19.18%, Ext. 1.22%  and Ash 1.65% were measured. In order to cook and pulping, Kraft process was used. The maximum  yield and kappa number of Populus costanzo at 1 hour cooking time, 150°c cooking temperature and 12% effective alkali condition  obtained at 61.91% and 54.83 respectively and the minimum  yield and kappa number at 3 hour cooking time, 170°c cooking temperature and 16% effective alkali condition  obtained at 45.63% and 13.42 respectively.  

Keywords

• Populus costanzo
• KRAFT PROCESS
• yield
• pulp
• kappa number
• Burst Strength
• tear strength