Sadasivan S, Rasmussen DH
Center for Advanced Materials Processing, Clarkson University, Potsdam, New York, 13699
J Colloid Interface Sci. 1997 Sep 15;193(2):145-51. doi: 10.1006/jcis.1997.4916.
Fiber optic dynamic light scattering (FODLS) is fast developing as a technique for sizing particles in concentrated dispersions. Fiber optic systems have the potential to be made into online particle size measuring equipment in process industries. Two different laser light sources were used to study monodisperse polystyrene latex dispersion with different particle sizes and volume fractions. The apparent diffusion coefficients were a function of particle size, volume fraction, and signal to noise ratios. The apparent diffusion coefficient data showed that FODLS probes collective diffusion for smaller particles and self diffusion for larger particles. It was observed that for a polydisperse concentrated dispersion, both self and collective diffusion were probed by FODLS. This means that the apparent diffusion coefficient can be used only as a relative quantity. Copyright 1997 Academic Press. Copyright 1997Academic Press
光纤动态光散射（FODLS）作为一种用于测量浓分散体系中颗粒尺寸的技术正在迅速发展。光纤系统有潜力被制成过程工业中的在线粒度测量设备。使用两种不同的激光光源来研究具有不同粒径和体积分数的单分散聚苯乙烯胶乳分散体。表观扩散系数是粒径、体积分数和信噪比的函数。表观扩散系数数据表明，FODLS对于较小颗粒探测集体扩散，对于较大颗粒探测自扩散。据观察，对于多分散浓分散体，FODLS同时探测自扩散和集体扩散。这意味着表观扩散系数只能用作相对量。版权所有1997年学术出版社。版权所有1997年学术出版社
