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| The Synthesis of Dehydroabietyl Lignin Amine and Its Surface Activity |
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| DOI： |
| Key Words:dehydroabietic acid； kraft lignin； mannich reaction; cationic emulsifier |
| Fund Project:本课题得到教育部科学技术研究重点项目(210165)和广西教育厅科研项目 (200911MS69)的资助。 |
| Author Name | Affiliation | | 刘祖广1，2 | 1.广西民族大学化学与生态工程学院,广西南宁,530006；2.广西林产化学品开发与应用重点实验室，广西南宁,530006 | | 蔡夏揆1，2 | 1.广西民族大学化学与生态工程学院,广西南宁,530006；2.广西林产化学品开发与应用重点实验室，广西南宁,530006 | | 何 宇1，2 | 1.广西民族大学化学与生态工程学院,广西南宁,530006；2.广西林产化学品开发与应用重点实验室，广西南宁,530006 | | 张太顺1，2 | 1.广西民族大学化学与生态工程学院,广西南宁,530006；2.广西林产化学品开发与应用重点实验室，广西南宁,530006 | | 曾 巍1，2 | 1.广西民族大学化学与生态工程学院,广西南宁,530006；2.广西林产化学品开发与应用重点实验室，广西南宁,530006 | | 江建军3，* | 3.四川工商职业技术学院，四川都江堰，611830 |
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| Abstract: |
| The N-(2-aminoethyl) dehydroabietic acid amide （ADRA）was prepared from dehydroabietic acid and 1,2-ethylenediamine. The mediator ADRA-F-KL was synthesized from Kraft lignin(KL), ADRA and formaldehyde (ADRA-F-KL) by mannich reaction. The effects of reaction temperature，reaction time，the molar ratio of reactants on nitrogen contents of ADRA-F-KL were investigated. Cationic composite emulsifier(ADRA-DETA-F-KL) was prepared from ADRA-F-KL, formaldehyde and diethylenetriamine(DETA). The experiments showed that the optimum reaction conditions of ADRA-F-KL were 3h of reaction time, n(KL)∶n(ADRA)=1∶0.25, 90℃ of reaction temperature. The IR, elemental analysis and surface tension of the target product showed that the corresponding amine-methyl groups were introduced into KL by the Mannich reaction. The minimum surface tension value of ADRA-DETA-F-KL was 48.5 mN/m in dilute hydrochloric acid solution with 2 of pH value. Compared to the lignin modified by diethylenetriamine/ formaldehyde whose minimum surface tension is 57.80 mN/m，the surface activity of ADRA-DETA-F-KL is improved greatly. |
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