Non-Debye dielectric relaxation around the liquid-glass transition of a glass-forming polymer.
Non-Debye dielectric relaxation around the liquid-glass transition of a glass-forming polymer.
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玻璃形成聚合物的液体玻璃化转变周围的非德拜介电弛豫。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
Colmenero
中科院分区：
文献类型：
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作者：
Alegría;Guerrica;Tellería;Colmenero
玻璃形成液体的动力学表现出普遍的特点，如非德拜行为，标度，和非阿克里乌斯温度依赖的特征速率。这些特征主要形成于10 - 9 ~ 10 s的时间范围内。众所周知，当玻璃形成液体的温度降低并且特征驰豫时间变得大于数百秒时，系统福尔斯平衡并获得玻璃。然而，玻璃形成-液体动力学的典型特征是否通过实验的液体-玻璃转变延伸到玻璃相，Tg仍然是未知的
The dynamics of glass-forming liquids shows universal features like non-Debye behavior, scaling, and non-Arrhenius temperature dependence of the characteristic rates. These features have been mainly established in the time range between 10 -9 and 10 s. It is well known that when the temperature of a glass-forming liquid is lowered and the characteristic relaxation time becomes larger than hundreds of seconds, the system falls out of equilibrium and a glass is obtained. However, whether or not the typical features of the glass-forming-liquid dynamics extend to the glass phase through the experimental liquid-glass transition, T g is still unknown