羟乙基甲壳素是甲壳素的一种水溶性醚化产物，采用气固相制备方法可以得到水溶性好、醚化度高的羟乙基甲壳素。
Water soluble hydroxyethyl chitin which has high etherification degree can be received by the gas-solid reaction with ethylene oxide.
羟乙基甲壳素是甲壳素的一种水溶性醚化产物，采用气固相制备方法可以得到醚化度高、水溶性好的羟乙基甲壳素。
Water soluble hydroxyethyl chitin which has high etherification degree can be obtained by the gas-solid reaction with ethylene oxide.
研究了水的用量，醚化温度，溶剂的量对CMS的粘度和取代度的影响。
Study the dosage of the water temperature, etherification, solvent quantity of CMS viscosity and substitution degree.
硝基苯胺在二甲苯中的溶解度要大于甲苯中的溶解度，而醚化物在两种溶剂中的溶解度相当。
Solubility of nitrobenzenamine in xylene was higher than that in toluene, but solubility of etherate was nearly the same in the two solvents.
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.
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.
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