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合成了十种文题所述液晶,其通式为: (其中R为CH_3、C_2H_5……C_(10)H_(21)) 测定了它们的元素分析、红外光谱、液晶相态和温度范围。应用为高温液晶固定液,对蒽油的组分分析和蒽、菲的分离,已取得较好结果。 相似文献
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A new approach to the hydrogen bond strength distriubtion has been developed based on thehydrogen bond strength distribution model proposed by Coleman et al. By using the method ofequilibrium thermodynamics, a thermodynamic equation for describing the hydrogen bondstrength distribution has been derived for the first time. By means of the equation some IR thermalanalysis results can be explained theoretically. Furthermore, the formulas for calculating theenthalpy and entropy change of the hydrogen bond dissociation have been established. 相似文献
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本文应用平衡热力学理论,时Coleman等人提出的氢键强度分布模型进行新的探讨。首次导出了能反映氢键强度分布的热力学方程.本文还进一步从导出的热力学方程出发,建立了计算氢键解离热焓和熵变化的公式. 相似文献
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