Modification of Cellulase to Different Bleached Softwood Pulp

Abstract:

Cellulase named as Novozym 476 was used to modify three kinds of bleached softwood pulps respectively. By analyzing the changes of refining degree, water retention value, specific surface area, wetting properties of fiber before and after enzymatic treatment, studied the influence of characteristics of raw material to the effect of enzymatic modification. The results indicate that in the same conditions, the refining property, water retention value, specific surface area and wetting property of the three pulps all increase. Among these three pulps, the pulp of Kamloops Kraft has the best modification effect. Refining degree of Kamloops Kraft pulp increases 36.0 °SR when refining for 10,000 PFI revolutions, and the water retention value increases by 68.0%, the dye loading increases with 0.1 mg/g, the contact angle decreases by 4.5%. It illustrates that the fiber raw material with a thin cell wall would have a better effect of enzymatic modification and the wrapping way of microfibers would influence the effect of enzymatic modification.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 1186-1189
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.1186
• Online since: July 2012
• Authors: Min Du, Xin Ping Li, Jin Wang, Peng Zhou Wang
• Keywords: Bleached Softwood Pulp, Cell Wall, Cellulase, Modification

References

[1] Ren Yongsen, Yang Chenming: China Pulp & Paper Industry. Vol.28(2007),p.6

[2] Singh Rashmi, Bhardwaj Nishi K: IPPTA J., Vol.22 (2010), pp.109-115

[3] Zhang Aiping, Qin Menghua, Xu Qinghua: China Pulp & Paper.Vol.24 (2005), p.57

[4] Yuan Ping, Yu Huisheng, Fu Shiyu: China Pulp & Paper.Vol.20 (2001), p.53

[5] Tanahashi M., Tamabuchi T., Coto T.: Wood Research.Vol.69 (1983), p.36

[6] Wang Chunhui, Wang Tianhong, Gao Peiji: Journal of Cellulose Science & Technology.Vol.5 (1997), p.1

[7] Qian Mincheng, Dai Hongqi, Ye Chunhong: Transactions of China Pulp and Paper.Vol.23 (2008), p.77

[8] Tang Aimin, Liang Wenzhi: Guangdong Paper. Vol. 06 (2000),pp.9-11

[9] Wang Juhua: Fiber Characteristics and Fiber Map of Chinese Papermaking Raw Material (1999).