LIGNIN STRUCTURAL CHANGES DURING TCF BLEACHING OF THE KRAFT PULP OF THE TRIPLOID OF POLULUS TOMENTOSA

被引：0
|
作者：
Wang, Zhen [1 ,2 ]
Liu, Yu [1 ,2 ]
Yang, Guihua [1 ]
Lucia, Lucian [2 ]
Cui, Hongyan [1 ]
机构：
[1] Shandong Inst Light Ind, Shandong Prov Key Lab Pulp & Paper Sci & Technol, Jinan 250353, Shandong, Peoples R China
[2] North Carolina State Univ, Dept Forest Biomat Sci, Raleigh, NC 27695 USA
来源：
16TH INTERNATIONAL SYMPOSIUM ON WOOD, FIBER AND PULPING CHEMISTRY, PROCEEDINGS, VOLS I & II | 2011年
基金：
中国博士后科学基金;
关键词：
triploid of Polulus Tomentosa; kraft pulp; P-31-NMR spectra; lignin structural changes; lignin molecular weight; Total Chlorine Free bleaching; HIGH-YIELD; PURITY;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Kraft pulp of Triploid of Polulus Tomentosa was obtained in laboratory. A TCF bleaching process -OQP was followed and the brightness of the bleached pulp reached 82%ISO. A new isolation technique was used to extract lignin samples from original wood, bleached and unbleached kraft pulps. M-n (number average molecular weights) and M-w (mass average molecular weights) distributions of all lignin samples were analyzed by Gel Permeation Chromatography (GPC). Functional groups changes of different lignin samples were quantitatively analyzed by P-31-NMR spectra to discover the disciplines of lignin structural changes during OQP bleaching process.
引用
收藏
页码：273 / 277
页数：5
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