Dynamics of liquids spreading on compliant substrates

液体在柔顺基材上铺展的动力学

• 批准号: EP/E056466/1
• 负责人: Omar Matar
• 金额: $ 36.52万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FE056466%2F1
• 关键词: Dynamics; liquids; spreading; compliant; substrates

The proposed work will involve a detailed examination of the interaction between a spreading liquid, laden with surface active additives, and an underlying compliant substrate made of a gel-like material. This three-year investigation will involve careful experimentation, to be carried out by a postgraduate student, and detailed modelling, to be carried out by a two-year postdoctoral research associated. The start of the latter will lag that of the former by a year in order to allow the experimental findings to guide the modelling effort. This work will be a collaboration between a chemical engineer, a chemist and an applied mathematician (from the Dept. of Chemical Engineering and the Dept. of Mathematics at ICL); the student and the postdoc will be located in the Dept. of Chemical Engineering. The experiments will examine the effect of gel strength and thickness, and surfactant type and concentration on the spreading characteristics using optical methods, while the modelling effort will use lubrication and elasticity theory to derive predictive models. The results of this multi-disciplinary work will elucidate the complex interactions between spreading liquids and underlying gel-like materials, which is a problem that lies at the heart of a range of engineering, biological and biomedical settings, such as drug delivery and spreading of gel-like materials (e.g. mucus) in the human body, deposition and spreading of gel layers in the manufacturing of photographic films, and cracking and subsequent removal of gels in oil reservoirs.

拟议的工作将涉及一个详细的检查之间的相互作用的传播液体，负载与表面活性添加剂，和一个底层的顺应性基板制成的凝胶状材料。这项为期三年的调查将涉及由一名研究生进行的仔细实验，以及由一项为期两年的博士后研究进行的详细建模。后者的开始时间将比前者晚一年，以便让实验结果指导建模工作。这项工作将是一个化学工程师，化学家和应用数学家（从部门之间的合作。化学工程系数学在ICL）;学生和博士后将位于系。化学工程系实验将使用光学方法检查凝胶强度和厚度以及表面活性剂类型和浓度对铺展特性的影响，而建模工作将使用润滑和弹性理论来推导预测模型。这项多学科工作的结果将阐明扩散液体和底层凝胶状材料之间的复杂相互作用，这是一个问题，在一系列工程，生物和生物医学设置的核心，如药物输送和扩散的凝胶状材料例如，在人体中的凝胶（例如粘液）、在照相胶片的制造中的凝胶层的沉积和扩散、以及在储油层中的凝胶的破裂和随后的去除。