高浓度丙三醇水溶液的介电谱测量与分析

Measurements and Analyses of the Dielectric Spectroscopy in Aqueous Solution of Glycerol with High Concentrations

对系列温度下丙三醇以及丙三醇浓度为90%、80%、70%的水溶液,进行了变频介电谱测量,运用HN公式等对介电谱进行了分析,得到了α弛豫的形状因子α和β,并分析了样品的玻璃化转变温度Tg和激活能E随丙三醇浓度的变化.

Glycerol and aqueous solutions of glycerol with concentrations 90%,80%and 70%were measured at various temperatures by the dielectric spectroscopy method.And the HN formula etal.were used to analyze the dielectric spectroscopy.The shape factors,αandβ,of theαrelaxation were gained,moreover,concentration dependence of glass transition temperatures and activation energies were analyzed.