利用低相干光纤动态光散射对胶体悬浮液进行粒度分析。

Particle sizing of colloidal suspensions by low-coherence fiber optic dynamic light scattering.

机构信息

School of Physics Science and Technology, Central South University, Changsha 410083, China.

出版信息

J Colloid Interface Sci. 2012 Feb 1;367(1):527-30. doi: 10.1016/j.jcis.2011.10.054. Epub 2011 Oct 31.

DOI:10.1016/j.jcis.2011.10.054

PMID:22099337

Abstract

A low-coherence fiber optic dynamic light scattering technique is used to measure the particle size distributions of colloidal suspensions with different volume fractions. We detect electric field autocorrelation function of the singly backscattered light from a sample and use the CONTIN algorithm to obtain the particle size distributions. As a result, in the range of volume fractions from 0.01 to 0.10 of monodispersive colloidal suspensions, the mean particle size with the deviation within 4% and the polydispersity approximate 5% can be determined for particles of different radii. The results demonstrate that the low-coherence fiber optic dynamic light scattering technique is effective in measuring particle size of colloidal suspensions.

摘要

一种低相干光纤动态光散射技术被用于测量具有不同体积分数的胶体悬浮液的颗粒尺寸分布。我们检测来自样品的单次背向散射光的电场自相关函数，并使用 CONTIN 算法获得颗粒尺寸分布。结果表明，在单分散胶体悬浮液的体积分数范围从 0.01 到 0.10 内，可以确定不同半径颗粒的平均粒径，其偏差在 4% 以内，多分散性近似为 5%。结果表明，低相干光纤动态光散射技术在测量胶体悬浮液的颗粒尺寸方面是有效的。