| 羧甲基纤维素钠取代度测定的新方法 |
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| 引用本文： | 曾晖扬,李卓美.羧甲基纤维素钠取代度测定的新方法[J].纤维素科学与技术,1996,4(4):38-43. |
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| 作者姓名： | 曾晖扬 李卓美 |
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| 作者单位： | 中山大学高分子研究所!广州，510275，中山大学高分子研究所!广州，510275 |
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| 基金项目： | 中国科学院广州化学研究所纤维素开放实验室资助 |
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| 摘 要： | 对测定羧甲基纤维素（CMC）的取代度（DS）方法进行了探讨，发现虽然电导滴定法可较快地和较准确地测定DS，但是易受反应副产物的影响。采用红外光谱法可达到快速测定DS，并且可直观地大致判断出样品的纯度，以决定是否需要对样品进行提纯精制。
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| 关 键 词： | 羧甲基纤维素 取代度 电导滴定 红外光谱 |
Novel method on the determination of DS of CMC |
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| Zeng Huiyang, Li Zhuomei.Novel method on the determination of DS of CMC[J].Journal of Cellulose Science and Technology,1996,4(4):38-43. |
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| Authors: | Zeng Huiyang Li Zhuomei |
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| Abstract: | Degree of substitution of carboxpoethyl groups (DS) in carboxymethyl cellulose (CMC) had been discussed. It was found that the conductometric titration method was affected markedly by the by-products,although this method was a convenient one.The DS could be determined by using infrared spetrum more easily and rapidly, and at the same time the purity of CMC sample might be estimated, too. |
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| Keywords: | carboxymethyl cellulose degree of substitution conductometric titration infrared spetrum |
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