35—THE MECHANISM OF THE OXIDATION OF CELLULOSE BY PERIODATE
35—THE MECHANISM OF THE OXIDATION OF CELLULOSE BY PERIODATE
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35—高碘酸盐氧化纤维素的机理
DOI：
10.1080/19447025708660110
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发表时间：
1957
期刊：
影响因子：
--
通讯作者：
T. P. Nevell
中科院分区：
文献类型：
--
作者：
T. P. Nevell
研究了温度、电解液和pH值对高碘酸盐氧化棉纤维速率的影响。研究表明，反应是以中间络合物的方式进行的，它分解成氧化产物的速度比形成氧化产物的速度要慢。通过降低温度和向高碘酸盐溶液中添加盐来增加络合物的形成程度。如果假定络合物带电，则可以用Donnan膜平衡理论来解释加盐的影响。当使用pH>；7的高碘酸盐溶液时，不溶的反应产物(氧纤维素酶)与用pH<；7的溶液产生的反应有很大的不同。对pH为10的反应进行了详细的研究，并讨论了结果的意义。
The effects of temperature, electrolytes, and pH, on the rate of oxidation of cotton cellulose by periodate have been studied. It has been shown that the reaction proceeds by way of an intermediate complex, which breaks down into the oxidation products more slowly than it is formed. The extent of complex formation is increased by lowering the temperature and by the addition of salts to the periodate solution. If it is assumed that the complex is electrically charged, the effect of added salts may be explained by application of the Donnan theory of membrane equilibrium. When periodate solutions of pH>7 are used, the insoluble reaction products (oxycelluloses) differ considerably from those produced by solutions of pH<7. A detailed study of the reaction at pH 10 has been made, and the implications of the results are discussed.