Structure and Rheology of Concentrated Dispersions: Statistical Mechanical Theory and Light Scattering Measurements

浓缩分散体的结构和流变学：统计力学理论和光散射测量

• 批准号: 9021349
• 负责人: William Russel
• 金额: $ 27万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9021349&HistoricalAwards=false
• 关键词: Structure; Rheology; Concentrated; Dispersions; Statistical

The proposed research is a combined theoretical and experimental investigation of the structural and rheological properties of colloidal dispersions. The effective medium properties are incorporated in a statistical theory to evaluate pair of particle interactions. The calculation of the structure and rheological properties for a variety of systems is proposed. The theory will be tested via light scattering measurements, for mixtures of hard spheres, sticky spheres and spheres bearing grafted polymer layers. The statistical mechanics approach can be regarded as an alternative or complement to molecular dynamics or Stokesian simulations, covering dilute and medium concentrated dispersions. The suggested theory should be valuable for the fundamental information generated, as well as the insight gained for guiding and correlating experiments for colloidal dispersions of interest in automotive and architectural coatings, ceramic particles processed as dispersions, cosmetics, and printing inks.

提出的研究是对胶体分散体的结构和流变性能的理论和实验相结合的研究。有效介质性质被纳入统计理论来评估粒子对相互作用。提出了各种体系的结构和流变性能的计算方法。该理论将通过光散射测量对硬球、粘球和带有接枝聚合物层的球的混合物进行测试。统计力学方法可被视为分子动力学或斯托克模拟的替代或补充，涵盖稀和中浓分散。所建议的理论对于产生的基本信息，以及对汽车和建筑涂料，陶瓷颗粒作为分散体加工，化妆品和印刷油墨中感兴趣的胶体分散体的指导和相关实验所获得的见解应该是有价值的。