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植物研究 ›› 2016, Vol. 36 ›› Issue (1): 151-155.doi: 10.7525/j.issn.1673-5102.2016.01.022

• 论文 • 上一篇    下一篇

乙醇法木质素羟甲基化改性研究

路祺1,2;孟永斌1,2;徐蕾1,2;张子东1,2;刘英1,2;孟庆焕1,2;祖元刚1,2*   

  1. 1.东北林业大学生物资源生态利用国家地方联合工程实验室,哈尔滨 150040;
    2.东北林业大学森林植物生态学教育部重点实验,哈尔滨 150040
  • 出版日期:2016-01-15 发布日期:2016-05-18

Hydroxymethylation of Lignin from Ethanol Pulping

LU Qi1,2;MENG Yong-Bin1,2;XU Lei1,2;ZHANG Zi-Dong1,2;LIU Ying1,2;MENG Qing-Huan1,2;ZU Yuan-Gang1,2*   

  1. 1.National Local Joint Engineering Laboratory for Ecological utilization of biological resources,Harbin 150040;
    2.Key Laboratory of Forest Plant Ecology,Northeast Forestry University,Ministry of Education,Harbin 150040
  • Online:2016-01-15 Published:2016-05-18

摘要: 以刺五加根茎剩余物为原料,以乙醇作为提取木质素溶剂,通过单因素实验和正交实验优化乙醇法木质素羟甲基化改性,其最优工艺条件是:碱量2.0%,反应温度80℃,反应时间3.5 h,碱木质素与甲醛质量比3∶1。在此条件下获得羟甲基化改性乙醇法木质素羟甲基含量最高可达到11.56%,游离甲醛含量为0.257%,本研究为实现乙醇法木质素的高附加值资源化应用提供理论和实验依据。

关键词: 木质素, 乙醇法木质素, 乙醇, 羟甲基化

Abstract: We extracted the lignin by ethanol method, with the residues of Acanthopanax root and stem as raw materials. By single factor and orthogonal experiments, the optimum of ethanol lignin hydroxymethylation alkali dose of 2.0%, reaction temperature of 80℃, reaction time of 3.5 h, and mass ratio of kraft lignin to formaldehyde of 3∶1. The modified lignin reached 11.56% hydroxymethyl groups and 0.257% free formaldehyde.

Key words: lignin, ethanol lignin, ethanol, hydroxymethylation