Comparison of Pulp Yield and Handsheet Properties of Scots Pine and European Aspen Wood under Exact Pulping Conditions Using Kraft Method

In this study, pulp and handsheets were produced using Sulfate (Kraft) method from Scots Pine (Pinus sylvestris L.) and European Aspen (Populus tremula L.) wood under the same cooking conditions. According to literature research, it the chip/liquor ratio was used as 1/4, the cooking temperature as 170 ± 2 ° C and the reaching time to maximum temperature as 90 and cooking time at maximum cooking temperature as 75 minutes. The ratio of active alkali/sulfidity was chosen as 18/25. As a result, significant differences in some properties of pulp and test papers have been observed. In particular, it is seen that the pulp yield obtained from the European aspen wood (53.72%) was found higher than that of the pulp yield (42.01%) obtained from the Scots pine