Characterization of high-yield pulp (HYP) by the solute exclusion technique

被引：69
作者：
Hui, Lanfeng [1 ,2 ]
Liu, Zhong [2 ]
Ni, Yonghao [1 ]
机构：
[1] Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 6C2, Canada
[2] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300222, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 24期
关键词：
High-yield pulps; Fiber characteristics; Solute exclusion technique; Fractionation; Fiber saturation point; FIBER SATURATION POINT; PORE-SIZE DISTRIBUTION; MECHANICAL PULPS; WATER-RETENTION; HARDWOOD KRAFT; CHEMICAL PULPS; CELL-WALL; STRENGTH; CELLULOSE; ASPEN;
D O I：
10.1016/j.biortech.2009.07.055
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
By following the solute exclusion technique, we determined the pore characteristics of 3 hardwood high-yield pulps (aspen. birch, maple). The fiber saturation point (FSP) was 1.40, 1.36 and 1.19 g water/g pulp, for aspen, birch, maple, respectively, which is lower than that of chemical pulps. Different fractions obtained from the Bauer-McNett classifier showed that the HYP fines have much more pore volume than their long fiber counterparts. The effects of beating, drying and re-wetting on the pore characteristics of HYP were also studied. Beating led to increased total pore volumes. Upon drying and re-wetting, much of the small pores from the HYP underwent permanent closure while the big pores were only slightly affected. Finally, the relationship between the water retention value (WRV) and FSP for HYP was examined. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6630 / 6634
页数：5
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