论文标题
胶体悬浮液干燥特性的粒子尺度建模
Particle-scale modeling of the drying characteristics of colloidal suspensions
论文作者
论文摘要
在干燥胶体悬浮液期间，胶体颗粒可以在退缩的自由表面下形成浓缩的颗粒层。干燥速率可以随着颗粒层的生长而逐渐降低。我们构建了一个模型，以研究这种干燥特征如何受到颗粒之间相互作用的影响。在此模型中，颗粒层的形成是通过Langevin Dynamics模拟描述的，并且根据粒子层的渗透性抗性评估了干燥速率。我们表明，当颗粒通过有吸引力的相互作用形成聚集体时，干燥速率的降低将被抑制。本模型将使我们能够通过胶体颗粒的特征来预测和控制干燥特性。
During drying of colloidal suspensions, colloidal particles can form concentrated particle layers beneath the receding free surface. The drying rate can gradually decrease with the growth of the particle layers. We construct a model to investigate how such drying characteristics is affected by interactions between particles. In this model, the formation of the particle layers is described by Langevin dynamics simulations, and the drying rate is evaluated from the permeation resistance of the particle layers. We show that the decrease in the drying rate is suppressed when the particles form aggregates by attractive interactions. The present model would enable us to predict and control the drying characteristics through the character of colloidal particles.
