Document Type : Research Paper

Authors

• Ahmad Samariha ¹
• Jafar Ebrahim poor tasmani ²
• Alireza Khakifiroz ³

¹ PhD Student, Science & Research Branch, Islamic Azad University (IAU), Tehran, Iran and Member of Young Researcher Club.

² Scientific member of Islamic Azad University, Savad kooh, Iran.

³ Head of ISIRI (Institute of Standards & Industrial Research of IRAN) Research Center

Abstract

This research was performed to investigate the properties of CMP pulp from rape straw. Samples of Colza straw was prepared from a farm located in the vicinity of Babul. Chemo mechanical Pulping process was employed using the 20 % cooking liquor of Mazandaran pulp and paper mill (Sodium Sulphite) based on the dry weight of colza straw. Cooking time and temperature were adjusted at 30, 40 and 50 minute and 170 degree centigrade, respectively. Pulps were refined up to 300± 25 CSF by using PFI Mill refiner and 60 g/m² hand sheets were made from each sample of pulps. The strength indices of hand sheets were measured using TAPPI standards. The results showed that strength indices like Tensile strength, Tear strength, Burst strength, Breaking length and Stiffness increased as the pulp yield decreased.

Keywords

• Rape straw
• chemo mechanical pulping (CMP)
• Burst Strength
• tensile strength
• BREAKING LENGTH

Main Subjects

• Pulp and paper