| 麦草氧碱黑液中木素的提取及改性 |
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| 引用本文： | 张棽,陈克利,杨淑惠. 麦草氧碱黑液中木素的提取及改性[J]. 中国造纸学报, 2000, 15(1): 62-65 |
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| 作者姓名： | 张棽 陈克利 杨淑惠 |
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| 作者单位： | [1]广州造纸集团有限公司，广州，510281 [2]天津轻工业学院，天津，300222 |
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| 摘 要： | 用盐酸分离出麦草氧碱黑液中的木素，用环氧丙烷(PO)在高温高压下使木素改性。由凝胶渗透色谱法和^1H-NMR谱图分析可知，麦草氧碱木素中醇羟基含量为7．07％，高于普通硫酸盐木素，经改性后的木素。其醇羟基含量进一步提高到10．10％，更加适合于聚氨酯的合成。
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| 关 键 词： | 改性 羟基含量 麦草氧碱木素 PO 环氧丙烷 聚氨酯 凝胶渗透色谱法 黑液 普通 高温高压 |
Isolation of Lignin from Wheat Straw Oxygen-Alkali Pulping Black Liquor and Lignin Modification |
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| Zhang Ling. Isolation of Lignin from Wheat Straw Oxygen-Alkali Pulping Black Liquor and Lignin Modification[J]. Transactions of China Pulp and Paper, 2000, 15(1): 62-65 |
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| Authors: | Zhang Ling |
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| Abstract: | Wheat straw oxygen alkali lignin (AOL) was precipitated from the oxygen alkali pulping black liquor by adding HCl and H AOL was synthesized from AOL and propylene oxide (PO) under high temperature and high pressure .The chemical properties of crude lignin,purified lignin and modified lignin were analyzed. It was found that the content of reactive function group,aliphatic hydroxyl (Alc OH) , in AOL was 7.07%,the content of Alc OH group in H AOL was higher (10.10%) and H AOL was more suitable for synthesizing polyurethane(PU).CODcr and color values were reduced significtantly after lignin had been precipitated. |
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| Keywords: | lignin oxygen alkali pulping lignin modifying PO polyurethane |
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