【摘要】 异丙醇和水的体积比90:10条件下,于40℃/1.5h用玉米淀粉和马铃薯淀粉在异丙醇水溶液中进行了制备高取代度、高粘度的羧甲基淀粉醚的比较。更多还原

【Abstract】 The amount of water used in the alkalization of starch directly affects the utilization of monochloroacetic acid. Experiments show that the mixture of isopropyl alcohol and water (90/10 by volume) is the appropriate solvent for this process. Carboxymethyl starch can be prepared at 40℃ in 1.5h with a high degree of substitution and viscosity of 35mPa·s (0.2% aqueous solution).These hold true for corn starch and in the case of potato starch a smaller amount of isopropyl alcohol is needed so as to prepare the product with a high degree of substitution and high viscosity.更多还原