Palm rachis microfibrillated cellulose and oxidized-microfibrillated cellulose for improving paper sheets properties of unbeaten softwood and bagasse pulps

被引:26
|
作者
Hassan, Mohammad L. [1 ,2 ]
Bras, Julien [3 ]
Mauret, Evelyne [3 ]
Fadel, Shaimaa M. [1 ]
Hassan, Enas A. [1 ]
El-Wakil, Nahla A. [1 ]
机构
[1] Natl Res Ctr, Cellulose & Paper Dept, Giza 12622, Egypt
[2] Natl Res Ctr, Ctr Excellence Adv Sci, Adv Mat & Nanotechnol Grp, Giza 12622, Egypt
[3] Grenoble INP Pagora, UMR CNRS 5518, Lab Genie Proc Papetiers LGP2, F-38402 St Martin Dheres, France
关键词
Palm; Bagasse; Softwood; Microfibrillated cellulose; Paper sheets; NANOFIBRILLATED CELLULOSE; STRENGTH; FIBERS; ADDITIVES; LEAVES;
D O I
10.1016/j.indcrop.2014.11.004
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Bleached palm rachis pulp, pretreated with xylanase enzymes, was used for isolation of microfibrillated cellulose (MFC) and TEMPO-oxidized MFC (TMFC) by ultrafine grinding. The isolated MFC and TMFC were used at ratios from 2.5% to 20% for improving strength properties of paper sheets prepared from unbeaten softwood and bagasse pulps. The retention of microfibrillated cellulose in paper sheets was also estimated. The results showed that MFC or TMFC brought about an increase in density, wet and dry tensile strength, tear resistance, and a decrease in air permeability of paper sheets prepared from unbeaten softwood or bagasse. However, usual beating of softwood fibers was much more effective in improving strength properties of softwood paper sheets than addition of microfibrillated cellulose. On the other hand, the improvement in strength properties of bagasse paper sheets as a result of MFC or TMFC addition was generally higher than that resulted from beating of bagasse pulp. Use of TMFC with unbeaten softwood or bagasse fibers resulted generally in better improvement in tensile strength (wet and dry) than in case of using MFC. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:9 / 15
页数:7
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