中文摘要：

用低温绝热量热计测量了国产93^#无铅汽油和乙醇混合体系（50wt％乙醇＋50wt％汽油及90Wt％乙醇＋10wt％汽油）在78—320K温区的热容．用最小二乘法拟合了热容与温度的函数关系．由热容随温度的变化曲线可知，E50和E90混合体系分别在95．61K和97．08K发生玻璃化转变；在118．03K和112．04K发生固一固相变；在156．26K和158．66K发生固一液相变．计算了以298．15K为基准的该混合体系的热力学函数．

英文摘要：

The heat capacities （Cp） of two kinds of gasohol composed of 50 wt% ethanol and 50 wt% gasoline 93^# , and 90wt% ethanol and 10 wt% gasoline 93^# are determined by an adiabatic calorimeter. The glass transition temperatures were found to be 95.61 K and 97.08 K, respectively. The liquid-solid transition and solid-liquid transition occurred at 118.03 K, 112.04 K and 156.26 K, 158.66 K, respectively. The relationship of Cp with respective to temperature T is established by using least square method. According to the relationship, the thermodynamic functions of the gasohol are derived.