Chemical analysis of bamboo samples were conducted in accordance with SNI; holocellulose, D-cellulose, lignin, pentosan, ash, DCM extractives, solubility in cold and hot water, as well as in 1% NaOH.
The chips were pulping by the pre-hydrolyzed - Kraft process in laboratory scale. The pulping trials were carried out in a rotary digester with indirect electrical heating. Pulping conditions to make bamboo dissolving pulp are pre-hydrolyzed acid with) 0.2%-0.4%; cooking with active alkali 20%-22%; sulfidity 30%-32%; H-factor 1500-1600; temperature 165 °C; chips to liquor ratio 1: 5. The cooked chips were washed with water and defibered at 2.5% consistency with a propeller mixer. After washing, the pulp was refined, pressed and shredded. Total pulp yield were measured. Kappa number of yield pulp was determined according to SNI 0494-2008.