Rotational diffusion of ellipsoidal latex particles in dispersion as studied by depolarized dynamic light scattering
Rotational diffusion of ellipsoidal latex particles in dispersion as studied by depolarized dynamic light scattering
复制标题
通过去偏动态光散射研究椭圆体乳胶颗粒在分散体中的旋转扩散
DOI：
10.1016/0927-7757(95)03481-1
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
H. Yamaoka
中科院分区：
文献类型：
--
作者：
H. Matsuoka;H. Morikawa;H. Yamaoka
用去偏振动态光散射技术测定了分散体系中不同粒径椭球乳胶粒子的旋转扩散系数Θ。测量的Θ值小于使用Perrin方程从颗粒几何形状计算的那些。在恒定的离子强度下，对于较小的胶乳颗粒，实验和计算的Θ值之间的差异较大。椭球体乳胶颗粒周围的离子气氛的影响，可能是旋转运动引起的变形，可以被认为是这种行为的起源。
The rotational diffusion coefficient, Θ, of ellipsoidal latex particles of different sizes in a dispersion has been measured by the depolarized dynamic light scattering technique. The measured Θ values were smaller than those calculated from the particle geometry using the Perrin equation. The difference between the experimental and calculated Θ values was larger for the smaller latex particles at constant ionic strength. The effect of the ionic atmosphere around an ellipsoidal latex particle, probably the distortion caused by rotational motion, can be thought to be an origin of this behavior.