عنوان مقاله [English]
The quality of pulp and paper will be reduced by increasing the number of waste paper recycling and utilization of virgin chemical pulp is one method to upgrade the recycled pulp quality. Therefore, bagasse soda chemical pulp was used to improve the Latif deinked pulp (DIP) quality at present study. Bagasse has been supplied by Pars Paper Company and soda pulp was made at laboratory scale. The Bagasse produced pulp under the optimum cooking conditions (using NaOH 17.5% and cooking time: 30 mins) had 51.3% yield and 18.6 kappa number, and bleached by HEH bleaching sequence. The pulp samples (bagasse, DIP, and imported long fiber pulp(LF)), were separately refined to 360 ml, CSF. Standard hand sheets were made from pure DIP pulp and also different ratios of 10 to 30% of any of bagasse and LF pulps in admixture with DIP pulp and the paper properties were determined. The results showed that the strength properties of DIP were improved by using soda bagasse pulp in DIP furnish. The physical and mechanical properties of paper made from 30% bagasse and 70% DIP pulps, except tear strength, were comparable with the properties of Latif paper (20% LF and 70% DIP pulps) and it can be used by elimination or remarkable decreasing of LF pulp.