| pH值对多元羧酸与纤维素交联反应的影响 |
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| 引用本文： | 方桂珍,李坚,刘一星.pH值对多元羧酸与纤维素交联反应的影响[J].林产化学与工业,1999,19(1):28-32. |
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| 作者姓名： | 方桂珍 李坚 刘一星 |
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| 作者单位： | 东北林业大学,哈尔滨,150040 |
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| 摘 要： | 采用以多元羧酸为酯化剂，以无机盐类和含氮化合物为催化剂的木材交联体系，这是一类新型的，水溶性的，无毒害，无污染的非甲醛系列交联体系。本文推导了这类反应的ＰＨ值与溶液中离子浓变化平衡关系式，采用ＦＴＩＲ光谱分析了ＰＨ值对酯化纤维素和反应中间体的影响，
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| 关 键 词： | 多元羧酸 酯化反应 pH值 |
EFFECT OF PH VALUE ON CROSSLINKING REACTION BETWEEN WOOD AND POLYCARBOXYLIC ACID |
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| Fang Guizhen,Li Jian,Liu Yixing.EFFECT OF PH VALUE ON CROSSLINKING REACTION BETWEEN WOOD AND POLYCARBOXYLIC ACID[J].Chemistry & Industry of Forest Products,1999,19(1):28-32. |
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| Authors: | Fang Guizhen Li Jian Liu Yixing |
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| Institution: | Northeast Forestry UniversityHarbin\ 150040\ China |
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| Abstract: | Polycarboxylic acids acting as esterification agents and inorganic salts acting as catalyst were adopted in the research of wood crosslinking reaction.This soluble crosslinking system is a new poison free and pollution free system.In this paper, epuilibrium relationships between pH and ion concentration were inferred. Effect of pH on esterification and anhydride intermediate were analyzed by FTIR spectra, from which we can demonstrate that esterification between polycarboxylic acid and wood was not acidcatalyzed, although the formation of cyclic anhydride intermediates was accelerated by the acid. Suitable pH of reaction was about 3.0. |
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| Keywords: | Polycarboxylic acid Esterification pH value |
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