Composition of Two Types of Cellulose Phosphates
Composition of Two Types of Cellulose Phosphates
复制标题
两种磷酸纤维素的组成
DOI：
10.1021/ie50480a040
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发表时间：
1949
影响因子：
--
通讯作者：
E. Buras
中科院分区：
文献类型：
--
作者：
J. D. Reid;L. Mazzeno;E. Buras
本文描述了进一步的实验，试图阐明纤维素的磷酸盐的结构制备的商业磷酸脲法制备的阻燃布和吡啶-三氯氧磷的方法。用电位滴定法证明，用磷酸脲处理纤维素制备的纤维素磷酸酯中的结合磷可能全部以单取代磷酸酯的形式存在。没有证据表明形成了其他更高度取代的产物。通过用磷氧氯吡啶混合物处理纤维素制备的纤维素磷酸盐的结构是类似的，除了在典型的样品中，约23%的磷可以作为二取代的磷酸酯来计算。氯也存在于该产品中，可能直接连接到葡萄糖单元的碳上。在典型样品中发现少量的氮，推测是由于吡啶。
This paper describes further experiments conducted in an effort to elucidate the structure of phosphates of cellulose prepared by the commercial urea phosphate method of preparing flameproofed cloth and by the pyridine-phosphorus oxychloride method. By electrometric titration it is shown that the combined phosphorus in cellulose phos-phate prepared bythe treatment of cellulose with urea phosphate is probably entirely in the form of a monosubstituted phosphate ester. There is no evidence of the formation of other, more highly substituted products. The structure of cellulose phosphate prepared by the treatment of cellulose with phosphorus oxychloridepyridine mixture is similar, except that, in a typical sample, approximately 23% of the phosphorus can be ac-counted for as a disubstituted phosphate ester. The chlorine also present in this product is probably attached directly to the carbons of the glucose units. A small amount of nitrogen is found in typical samples, presum-ably due to pyridine.