Agricultural wastes, such as Helianthus annus (sunflower), have begun to receive considerable attention in the forest industry in recent years to alleviate the shortage in woody raw materials. This paper mainly focuses on the influence of partial replacement of mixed hardwood NSSC pulp with sunflower stalk NSSC pulp. Experimental cooks were implemented on chips prepared from de-pithed stalks. Optimum cooking obtained reflecting a pulp yield of 43.8±2.08% and kappa number of 82.6±1.67. The pulps were refined and then substituted with mixed hardwood NSSC pulp at three levels of 10, 20, and 30%. The signs of improvement in most paper properties showed the benefits of using sunflower NSSC pulp with freeness of 328 mL CSF and 372 mL CSF up to 30% as a supplementary pulp with MWPI NSSC pulp in making fluting paper. The exclusive 30% of the higher freeness pulp (372 mL CSF) can be applied, provided that at least 5% of unbleached long fiber pulp be added to the mixed pulp.
کلید واژگان :Fluting paper; MWPI; Nonwood plants; Pulp; Sunflower stalk; Tensile index
ارزش ریالی : 1200000 ریال
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