| TEMPO体系对粘胶纤维的氧化过程研究 |
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| 引用本文： | 顾春菊,孙宾,马敬红,梁伯润.TEMPO体系对粘胶纤维的氧化过程研究[J].纤维素科学与技术,2004,12(1):7-13. |
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| 作者姓名： | 顾春菊 孙宾 马敬红 梁伯润 |
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| 作者单位： | 东华大学纤维材料改性国家重点实验室,上海,200051 |
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| 摘 要： | 2,2,6,6-四甲基哌啶氧化物自由基(TEMPO)-NaClO-NaBr是一种新的选择性氧化体系,文章研究了该体系对粘胶纤维的氧化过程。CP/MAS13C-NMR反映该体系对粘胶纤维是C6位选择性氧化,并能完全氧化成纤维素糖醛酸;用CP/MAS13C-NMR、耗碱量法和酸碱中和法研究了反应过程中羧基含量的变化;粘度法对聚合度的研究显示,粘胶纤维的降聚现象在反应一开始就非常显著。
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| 关 键 词： | TEMPO 粘胶纤维 选择性氧化 |
| 文章编号： | 1004-8405(2004)01-0007-07 |
| 修稿时间： | 2003年11月14 |
Study on the TEMPO-mediated Oxidation of Rayon |
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| GU Chun-ju,SUN Bin,MA Jing-hong,LIANG Bo-run.Study on the TEMPO-mediated Oxidation of Rayon[J].Journal of Cellulose Science and Technology,2004,12(1):7-13. |
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| Authors: | GU Chun-ju SUN Bin MA Jing-hong LIANG Bo-run |
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| Abstract: | Rayon was oxidized by 2,2,6,6-tetramethylpipelidine-1-oxyl radical(TEMPO)-NaClO- NaBr system, and the oxidation process was studied. The result of CP/MAS 13C-NMR showed that C6 primary alcohol groups in rayon could be completely and selectively oxidized to carboxyl groups, and cellouronic acid was obtained. CP/MAS 13C-NMR, alkali consumption and acid-alkali neutralization were used to measure the carboxyl content formed in the system. The DPv changed in rayon was also investigated. |
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| Keywords: | TEMPO rayon selective oxidation |
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