| 金属离子对纤维素碱性降解影响的初步研究 |
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| 引用本文： | 丁文慧,李群.金属离子对纤维素碱性降解影响的初步研究[J].天津轻工业学院学报,2011(1):27-30. |
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| 作者姓名： | 丁文慧 李群 |
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| 作者单位： | 天津市制浆造纸再点实验室,天津科技大学材料科学与化学工程学院,天津300457 |
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| 基金项目： | 国家自然科学基金资助项目（20676101） |
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| 摘 要： | 以纤维素二糖、微晶纤维素及脱脂棉作为纤维素模型物,分别考察K＋、Mg2＋和Ca2＋对纤维素碱性降解性能的影响.结果表明：金属离子的种类、用量及反应时间均会影响纤维素的碱性降解.K＋对纤维素碱性降解有促进作用,Mg2＋和Ca2＋则会抑制纤维素碱性降解反应;并且随着金属离子用量的增加及反应时间的延长,K＋的促进作用及Mg2＋、Ca2＋的抑制作用愈加明显.
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| 关 键 词： | 金属离子 纤维素 碱性降解 |
Elementary Study on the Effect of Metal Ions on the Alkaline Degradation of Cellulose |
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| DING Wen-hui,LI Qun.Elementary Study on the Effect of Metal Ions on the Alkaline Degradation of Cellulose[J].Journal of Tianjin University of Light Industry,2011(1):27-30. |
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| Authors: | DING Wen-hui LI Qun |
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| Affiliation: | (Tianjin Key Laboratory of Pulp and Paper,College of Material Science and Chemical Engineering,Tianjin University of Science ＆ Technology,Tianjin 300457,China) |
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| Abstract: | With cellobiose,microcrystal cellulose（MCC）and absorbent cotton cellulose as model materials of celluloset,he effect of K＋,Mg2＋,Ca2＋ on the cellulose alkaline degradation in different conditions was studied.The results showed that the types,dosages and reaction time of metal ions had a great effect on the alkaline degradation of cellulose.K＋ promoted cellulose alkaline degradation while Mg2＋ and Ca2＋ inhibited the alkaline degradation of cellulose.With the increase of the dosage of metal ions and the prolonging of reaction time,the promotion function of K＋ and the inhibition effects of Mg2＋ and Ca2＋ on the alkaline degradation of cellulose became more significant. |
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| Keywords: | metal ions cellulose alkaline degradation |
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