Rotational diffusion of colloid spheres in suspension investigated by deuteron NMR
Rotational diffusion of colloid spheres in suspension investigated by deuteron NMR
复制标题
通过氘核核磁共振研究悬浮液中胶体球的旋转扩散
DOI：
10.1021/la00024a006
复制
发表时间：
1994
期刊：
影响因子：
3.9
通讯作者：
H. Sillescu
中科院分区：
文献类型：
--
作者：
A. Toelle;H. Sillescu
本文用~ 2 H-NMR脉冲技术研究了氘代聚苯乙烯小球在粘性液体悬浮液中在10 ~（-3）~（-1）s时间尺度上的再取向运动。得到的旋转相关函数可以用拉伸指数拟合，拉伸参数随温度降低而减小。由平均旋转相关时间得到的流体动力学球半径与稀悬浮液动态光散射得到的结果一致
2 H-NMR pulse techniques have been applied to probe reorientational motion of small deuterated polystyrene spheres in suspensions of a viscous liquid on a time scale of 10 -3 -1 s. The rotational correlation functions obtained could be fitted by stretched exponentials with a stretching parameter that decreases on lowering the temperature. The hydrodynamic sphere radius obtained from the mean rotational correlation times agrees with that from dynamic light scattering in dilute suspensions