...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Na Nuclear Quadrupolar Relaxation as a Probe of the Microstructure and Dynamics of Aqueous Clay Dispersions: An Application to Laponite Gels
【24h】

Na Nuclear Quadrupolar Relaxation as a Probe of the Microstructure and Dynamics of Aqueous Clay Dispersions: An Application to Laponite Gels

机译：Na核四极弛豫作为黏土分散体的微观结构和动力学的探针：在皂石凝胶中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

↑(23)Na relaxation studies of aqueous clay dispersions showed influence of the order/disorder transition of clay gels and the quadrupolar relaxation of neutralizing sodium counterions. Detection of the fast and slow components of the 23Na transverse magnetization gives access to the microstructural and dynamical properties of colloidal dispersions. Numerical simulations of sodium diffusion, using a simplified model of clay dispersion, explain the pathology of the ↑(23)Na relaxation rates by the high sensitivity of the quadrupolar coupling to the orientational correlations of charged interfaces. Frequency variation of the NQR relaxation rates of confined counterions therefore appears as a new tool for the investigation of the spatial correlations of charged interfaces within disordered porous media.
机译：^（23）水性粘土分散体的钠弛豫研究表明，其对粘土凝胶有序/无序过渡和中和钠抗衡离子的四极弛豫的影响。通过检测23Na横向磁化的快慢成分，可以访问胶体分散体的微观结构和动力学特性。使用简化的粘土分散模型对钠扩散进行的数值模拟，通过四极耦合对带电界面的取向相关性的高敏感性，解释了^（23）Na弛豫速率的病理。因此，受限离子的NQR弛豫速率的频率变化似乎是研究无序多孔介质中带电界面空间相关性的一种新工具。

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