عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The porpurse of this research is determination of effect of old magazines deinked pulp in compound Poplar on the paper properties and also determination of the best appropriate percentage mixture of OMG deinked pulp with poplar CMP pulp. Provided poplar samples from Bahramnia research & educational forest in Shastkalateh of Gorgan, were cooked with CMP method by sodium solfite and Sodium carbonate. Then a stage of refining was done to achive about 300 of consistency. OMG recycled papers were deinked by Flotation method and then they were bleached by Hydrogen Peroxide. Ultimately deinked recycled pulp was mixed in different percentages with CMP pulp and imported long fibers. Then handsheet papers were examined from point of optical and mechanical properties. The results shown that deinked mechanical pulp is a good alternative material and it can to be replaced with a part of imported long fiber and CMP pulp. The best composition of pulp was determined for 80% CMP, 15% L.F and 5% deinked OMG.