【摘要】 用化学分析方法和红外光谱法测定了在不同 p H值下制备的一系列醋酸酯淀粉的取代度和乙酰基含量 ,获得了 p H值对淀粉酯化反应的影响规律 ,并解释了该规律 .更多还原

【Abstract】 Acetylated starches have been prepared in different pH reaction conditions. The acetylation value and substitution degree of these starches were determined with chemical analysis methods and IR spectrum. An influence rule of pH on esterification of starch was discovered and explained.更多还原