Comparison on the characteristics of Salix nigra Kraft and Soda pulp and paper

In this study pulp and hand sheets paper characteristics of Salix nigra wood kraft and soda pulp and paper were investigated. Average density of dry and bulk density wood were determined 0. 35 and 150 kg/m3 and average fiber dimension consist of fiber length، fiber diameter were measured، 1100 and 30 µm، respectively. The chemical composition were determined as cellulose 42%، lignin 28% and extractive 4%. In order to coocking and pulping، Kraft (Sulfate) and soda process were used. For comparison of fiber dimensions، physical properties and chemical composition of the mean and standard deviation، yields of pulp in the form of a factorial randomized complete block design test، the strength properties of handsheets table ANOVA and for group means of the Duncan were used. All paper strengths of two hour cooking show better results than one hour cooking times، and all paper strengths of 22% alkaline show better result than 18%، also all paper strengths of 100% mixture show better result than 25% mixture (100% mixture only contain kraft pulpof salix nigra). The results of hand sheet strength indicated that Kraft pulp of salix nigra wood will provide a suitable to mix with short fiber hard wood pulp.