本文介绍了羧甲基淀粉的研究现状，合成原理和方法，并对羧甲基淀粉取代度测试的方法进行了详细的介绍。
The paper introduces the present research carboxymethyl starch synthesis principle and method, and the substitution degree of carboxymethyl starch test methods were introduced in detail.
探讨了以异丙醇-水作溶剂，通过一次醚化，制备高取代度、高粘度羧甲基淀粉醚的最佳条件。
This paper discusses the optimum condition for preparing carboxymethyl starch with high degree of substitution and high viscosity by using the solution isopropanol-water through etherification.
采用干法工艺制备了不同取代度的羧甲基淀粉，测试了其浆液、浆膜性能。
A series of CMS with different substitution degree are synthesized by dry preparation, and size paste and films are also tested.
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