【摘要】 用最近发明的液态簧振动力学谱方法对典型自触发无序材料(邻苯二甲酸二脂系列样品)进行了测量,验证了该方法的可信性与有效性,并且表明它能够提供物质变化的丰富信息.研究结果还表明,随着分子内部自由度的增加,邻苯二甲酸二脂系列材料的玻璃化转变温度表现出先减小然后又增加,但脆性是先增加后减小的有趣又难以理解的反常趋势.实验中,还发现了一种有趣的现象,即样品在低温的Crack效应.更多还原

【Abstract】 The 2-formyl-2-lipin-series glassformers of self-generated disorder were measured by the reed-vibration mechanical spectrum for liquids (RMS-L) recently invented,that ensures the its reliability and availability to investigate the physical variations of soft-condensed matters. The measured results also indicate that,with the increase of the internal freedom degrees of the molecules,the glass transition temperature of the 2-formyl-2-lipin-series shows an anomalous tendency first decreasing then increasing,but the fragility changes in a contrary way,which is interesting and quite difficultly understood. A interesting phenomenon,i.e. the crack effect of the samples,was also observed at low temperature.更多还原