Xylans on eucalyptus brown pulp propertie

Ciência Rural

Colodette, Jorge Luiz¹  Pedrazzi, Cristiane¹  Gomide, José Lívio²  Coldebella, Rodrigo¹  Oliveira, Rubens Chaves de²  Wille, Vania Karine Dick¹ 

[1] Universidade Federal de Santa Maria, Santa Maria, BR;Universidade Federal de Viçosa, Viçosa, BR

关键词: hemicelluloses;    eucalyptus pulp;    kraft cooking;    paper;   

DOI  :  10.1590/0103-8478cr20130453

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The objective of this study was to evaluate properties of brown pulp from Eucalyptus grandis and Eucalyptus urograndis of distinct chemical composition, mainly in refers to its xylans content, for the manufacture of tissue and printing and writing (P&W) paper grades. Brow pulps of kappa number 17-18 and xylans contents varying 6-21% had been produced under different cooking protocols: 1) conventional kraft; 2) pre-hydrolysis kraft; 3) high alkalinity kraft; and 4) kraft of high yield. The brown pulps had been beated in PFI mill and its respective produced papers had been evaluated as regards physical-mechanical and optic properties. The highest bulk values had been gotten for papers with low xylans contents, what had revealed interesting, if bleached, in the manufacture of tissue papers. The papers with high xylans contents, had been presented technically viable and with resistance characteristics adjusted for the manufacture of P&W papers.

【 授权许可】

Unknown