Viscosity of cellulose pulp was greatly decreased with endo-xylanase treatment but tiny decreased with exo-xylanase treatment. Change of freeness was greatly influenced with exo-xylanase treatment. The first stage of refining(5,000 revolution), freeness was greatly decreased with exo-xylanase treatment. After middle stage of refining(10,000 revolution) change of freeness was similar to endo-xylanase treatment. WRV(water retention value) was more effective exo-xylanas than endo-xylanase treatment. Interfiber bonding of cellulose fiber was disintegrated with exo-xylanse treatment.
목차
Abstract 1. 서론 2. 실험 2-1. 공시 재료 2-2. 실험 방법 3. 결과 및 고찰 3-1. 고해 시간에 따른 펄프의 점도 변화 3-2. 고해 시간에 따른 여수도 변화 3-3. WRV 변화 3-4. Fiber Fine 함량 변화 4. 결론 참고문헌