【24h】

A comparison of rheology, dielectric response, and calorimetry within indane-based glass-formers

机译:茚满玻璃形成剂中流变学,介电响应和量热的比较

获取原文
获取原文并翻译 | 示例
           

摘要

We report dynamics data on a family of indane glass-forming liquids. Although structural variations make the glass transition vary over a 77 K range, the fragility and width of the relaxation time distribution from oscillatory shear measurements are quite similar for all 14 indanes studied. In contrast, the measured width of the primary relaxation time distribution from dielectric measurements varies considerably for different indanes. The temperature dependence of relaxation time can be described using either Vogel-Fulcher or dynamic scaling, but only the latter allows both mechanical and dielectric data sets to have the same divergence temperature. The consequences of this observation for the thermodynamic significance of such a divergence temperature are discussed. (c) 2006 Elsevier B.V. All rights reserved.
机译:我们报告了一系列茚满玻璃形成液体的动力学数据。尽管结构变化使玻璃化转变温度在77 K范围内变化,但对于所有研究的14种茚满,振荡剪切测量得出的弛豫时间分布的脆弱性和宽度都非常相似。相反,对于不同的茚满,从介电测量值测得的主要弛豫时间分布的宽度变化很大。可以使用Vogel-Fulcher或动态缩放来描述弛豫时间对温度的依赖性,但是只有后者允许机械和介电数据集具有相同的发散温度。讨论了这种观察结果对这种发散温度的热力学意义的影响。 (c)2006 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号