Effect of chemical pretreatment on pulp and paper characteristics of bamboo gigantochloa scorthechinii kraft fibers

[摘要] In chemical pulping process, lignin is targeted to be dissolved and eliminated as much as possible in order to obtain better fiber separation. A primary study was carried out to investigate the effect of sodium hydroxide pretreatment prior to bamboo chemical pulping. The selected bamboo species was Gigantochloa scortechinii which is a well-known bamboo in Malaysia. The bamboo chips were soaked in 2 % sodium hydroxide solution for 6 hours at 60 °C. These treated chips were cooked at 14 % and 18 % of alkali active via kraft pulping process. The unbleached pulp was obtained and made into paper. The pulp and paper were tested according to pulp yield, pulp freeness, paper optical, paper physical and paper mechanical properties. The results exhibited that by using treated bamboo chips, the value of pulp yield, freeness and paper brightness increasing. Slight decrement was observed for mechanical paper properties such as tensile, tear and burst strength. Chemical pretreatment prior to pulping process was investigated to offer significant effects to the pulp and paper properties of bamboo Gigantochloa scortechinii. Hence, mild kraft pulping can be carried out to produce bamboo unbleached pulps. In addition, dependency on bleaching sequences can also be declined.

[发布机构] Pulp and Paper and Pollution Control Program, Laboratory of Biopolymer and Derivatives, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Selangor; 43400, Malaysia^1;Malaysian Timber Industry Board (MTIB), Menara PGRM, Cheras, Kuala Lumpur; 56100, Malaysia^2;Forest Products Division, Forest Research Institute Malaysia (FRIM), Kepong, Selangor; 52109, Malaysia^3

[学科分类] 生物科学（综合）

[关键词] Bleaching sequence;Chemical pre-treatment;Chemical pulping process;Effect of chemicals;Gigantochloa scortechinii;Mechanical paper;Sodium hydroxide pretreatment;Sodium hydroxide solutions