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| The Characterization of Deformation Behavior of Mechanical Lignocellulosic Fibers and Its Effect on Interfiber Bonding Properties |
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| DOI：10.11980/j.issn.0254-508X.2017.12.003 |
| Key Words:lignocellulosic fiber deformation property bonding property flexibility |
| Fund Project:国家自然科学基金面上项目（31670588）；中国博士后科学基金项目（2016M600516）。 |
| Author Name | Affiliation | | 王 欣1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 李志强1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 张红杰1，2，3,* | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457；2.河北华泰纸业有限公司,河北赵县,051530；3.山东华泰纸业股份有限公司,山东东营,257335 | | 钱学君2 | 2.河北华泰纸业有限公司,河北赵县,051530 | | 程洪顺2 | 2.河北华泰纸业有限公司,河北赵县,051530 | | 张凤山3 | 3.山东华泰纸业股份有限公司,山东东营,257335 | | 李晓亮3 | 3.山东华泰纸业股份有限公司,山东东营,257335 |
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| Abstract:In this study, the pine TMP was delignified with sodium chlorite under acidic conditions, to obtain pulp fibers with different lignin contents. The deformation properties of these fibers were characterized by different methods, including flexibility of fiber(F), aspect ratio of fiber cross section(AR) and deformation index of fiber(CI). Finally, the effects of fiber deformation behavior on the interfiber bonding properties and physical strength of handsheets were discussed in details. The results showed that the F, AR and CI could characterize the fiber deformation, when the lignin content decreased from 24.28% to 2.67%, the change of relative deformation characterized by F was 956.5%, which was several times greater than that characterized by the others, therefore, F was the most comprehensive characterization index among them; the increase of F from 0.516×1012 N-1·m-2 to 5.454×1012 N-1·m-2 contributed to the increase of the relative bonding area (RBA) and shear bond strength (b) of the fibers, which led to the linear increase of the Page bonding strength index from 3.60 N·m/g to 84.07 N·m/g. During the paper sheet forming process, the contradiction relationship between physical strength and bulk properties of the paper sheets could be alleviated by adjusting the deformation properties of fiber materials. |
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