The Influence of Collective Interactions Between Colloidal Particles on Colloidal Stability

支持波多黎各Piedras大学的Lutful Bhuiyan教授 由理论与计算化学项目资助， 继续他对集体影响力的理论研究 胶体颗粒之间的相互作用对胶体稳定性的影响。 修正的Poisson-Boltzmann（MPB）理论将被用来研究 所有带电物种的集体效应的重要性 胶体溶液对两个胶体粒子之间的相互作用。 研究的四个具体目标是：1）使MPB方程适应于 一种或多种物质是胶体颗粒的情况 因此，所有的相互作用都被平等对待; 2）研究 胶体颗粒之间的相互作用对浓度，大小， 胶体粒子和简单离子的电荷; 3）确定 与溶剂分子的空间相互作用对 胶体-胶体相互作用;以及4）考虑进一步发展 MPB方法。 一个基本的理解的性质，粒子间的力量， 高度相互作用的胶态分散体还不存在。 是 仍然不太清楚是什么使带电的胶体颗粒 分散在水中， 因为他们不寻常的身体状况 胶体材料已发现广泛的工业用途，并且 在未来可能有重要的设备应用。 为了设计 材料与所需的性能，有必要了解 详细的原子水平的描述之间的强相互作用 溶液中的带电粒子。 Bhuiyan的研究是针对一个 基本理论来解释这些特性。

Professor Lutful Bhuiyan, University of Puerto Rico Piedras, is supported by a grant from the Theoretical and Computational Chemistry Program to continue his theoretical research on the influence of collective interactions between colloidal particles on colloidal stability. Modified Poisson-Boltzmann (MPB) theory will be used to investigate the importance of collective effects of all the charged species of a colloidal solution on the interaction between two colloidal particles. Four specific goals of the research are: 1) to adapt the MPB equation to the situation where one or more of the species is the colloidal particle so all interactions are treated on an equal footing; 2) to study the interaction between colloidal particles on concentration, size, and charge of both the colloidal particle and the simple ions; 3) determine the effect of steric interaction with solvent molecules on colloid-colloid interactions; and 4) to consider further development of the MPB approach. A fundamental understanding of the nature of interparticle forces in highly interacting colloidal dispersions does not as yet exist. It is still not well understood what keeps charged colloidal particles dispersed in water from coagulating. Because of their unusual physical properties colloidal materials have found widespread industrial use, and may in the future have important device applications. In order to design materials with desired properties, it is necessary to understand the detailed atomic level description of the strong interactions between these charged particles in solution. Bhuiyan's research is directed at a basic theory to explain these properties.