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Thermal analysis of glycerol citrate/starch blends

机译:柠檬酸甘油酯/淀粉混合物的热分析

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The reaction of glycerol and citric acid was studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis. Reactions were performed in the DSC with a temperature oscillation of 1 degrees C/min applied while scanning the range of 20-220 degrees C. This modulated technique allowed separation of reversible and irreversible thermal effects. The energy associated with the esterification of glycerol and citric acid, 40 J/g, was calculated from the irreversible component of the heat flow. When cornstarch was blended with glycerol and citric acid, the weight loss curves displayed prominent shifts in maxima values attributable to starch degradation. (C) 2008 Wiley Periodicals, Inc.
机译:通过差示扫描量热法(DSC)和热重分析法研究了甘油与柠檬酸的反应。在DSC中以1摄氏度/分钟的温度振荡进行反应,同时扫描20-220摄氏度的范围。此调制技术可分离可逆和不可逆热效应。由热流的不可逆成分计算出与甘油和柠檬酸酯化反应相关的能量为40 J / g。当玉米淀粉与甘油和柠檬酸混合时,重量损失曲线显示出由于淀粉降解而导致的最大值显着变化。 (C)2008 Wiley期刊公司

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