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| Effect of Ultrasound on Aminating Modification of Lignin |
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| DOI： |
| Key Words:lignin； aminating modification； nitrogen content； ultrasonic treatment； Mannich reaction |
| Fund Project:江苏省教育厅项目（08KJD430001）；江苏大学高级人才基金（08JDG022）；教育部重点实验室项目(KLACLS1010)。 |
| Author Name | Affiliation | | 郝 臣 | 江苏大学化学化工学院，江苏镇江，212013 | | 张鹏飞 | 江苏大学化学化工学院，江苏镇江，212013 | | 谢文静 | 江苏大学化学化工学院，江苏镇江，212013 | | 白 毅 | 江苏大学化学化工学院，江苏镇江，212013 | | 王晓红 | 江苏大学化学化工学院，江苏镇江，212013 |
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| Abstract: |
| The lignin from black liquor was modified through Mannich reaction to synthesize a kind of cationic surfactant-lignin amine. The modified degree of lignin was determined by nitrogen content.The effect of ultrasound on aminating modification of lignin was studied. The viscosity and surface tension were measured to determine the physical performance of the modified samples, and the product structure was charactered by infrared spectrum and TG. The results showed that ultrasonic treatment is of benefit to improve the reactivity of lignin ,and increase the modification rate of lignin. Modification effect of lignin by the ultrasonic treatment is improved after alkaline activating .The modified sample has higher surfactivity obviously. |
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