论文标题
多玻璃醇的玻璃性密度化过程中分子内和分子间不均匀性
Intra- and Intermolecular Inhomogeneities in the Course of Glassy Densification of Polyalcohols
论文作者
论文摘要
为了测试大多数分子液体和玻璃理论固有的基本假设，在短多理中含有红外光谱，在温度范围从高于其玻璃过渡的温度范围内进行。通过分析特定的振动，确定了共价键和氢桥的热膨胀，从而揭示了引人注目的差异。与密度的比较验证了\ textIt {Intra}分子膨胀的忽略度，但在\ textit {Inter}分子尺度上暴露了严重的不均匀性。这表明在玻璃致密化中有不同的作用，并促进了原子的理解。
To test basic assumptions inherent to most theories of molecular liquids and glasses, Infrared spectroscopy is carried out on short polyalcohols at temperatures ranging from far above to far below their glass transition. By analyzing specific vibrations, the thermal expansion of covalent bonds and hydrogen bridges is determined revealing striking differences. A comparison with density verifies the negligibility of \textit{intra}molecular expansion but exposes severe inhomogeneities on \textit{inter}molecular scale. This signals distinct roles in glassy densification and promotes an atomistic understanding.
