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

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. Mn (number average molecular weights) and Mw (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 31P-NMR spectra to discover the disciplines of lignin structural changes during OQP bleaching process.

关键词： triploid of Polulus Tomentosa, kraft pulp 31P-NMR spectra lignin structural changes lignin molecular weight Total Chlorine Free bleaching

作者: Zhen Wang Yu Liu Guihua Yang Lucian Lucia Hongyan Cui

作者单位: Shandong Provincial Key Laboratory on Pulp & Paper Science and Technology, Shandong Institute of Lig Shandong Provincial Key Laboratory on Pulp & Paper Science and Technology, Shandong Institute of Lig Department of Forest Biomaterials Science, North Carolina State University, Raleigh, NC 27695-8005,

会议类型: 国际会议

会议名称: 16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)

会议地点: 天津

会议语种:英文

页码: 273-277

在线出版日期: 2011-06-08（万方平台首次上网日期，不代表论文的发表时间）