Acquisition of Rheometer and Laser for in situ Optical Measurements of Flow-Induced Structures

获取流变仪和激光器，用于流动诱导结构的原位光学测量

• 批准号: 9625856
• 负责人: David Pine
• 金额: $ 10.33万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9625856&HistoricalAwards=false
• 关键词: Acquisition; Rheometer; Laser; situ; Optical

9625856 Pine Over the past ten years, University of California, Santa Barbara has become one of the premier centers for research on complex liquids and has made fundamental advances in the understanding of polymer solutions, colloidal suspensions, surfactant systems, and biomaterials. Research on these systems is highly interdisciplinary with participants from several departments including Chemical Engineering, Mechanical Engineering, Materials, Chemistry, Physics, and Biology. The study of the flow behavior of these systems has been a central and consistent focus, with many innovations being developed at UCSB. %%% This award is for the acquisition of a commercial fluids rheometer and an argon ion laser in order to develop a high performance measurement system capable of making simultaneous rheological and optical measurements. The instrument will be used to study the relationship between flow and structure in complex fluids. The rheometer is capable of making dynamic, transient, and steady state measurements of shear and normal stresses in macromolecular solutions and suspensions. To this rheometer, we will add the capability of performing several optical measurements including small and large angle light scattering, microscopy, and flow birefringence. The optical measurements will provide crucial information about structural changes which accompany rheological changes of the fluid under study. By simultaneously performing both rheological and structural measurements, this instrument will significantly advance the state-of-the-art and provide a unique and powerful tool for understanding the flow and processing of complex fluids. ***

9625856松树在过去十年中，加利福尼亚大学圣塔芭芭拉分校已成为对复杂液体研究的主要研究中心之一，并在理解聚合物溶液，胶体悬浮液，表面活性剂系统和生物材料方面已取得了根本的进步。 这些系统的研究是高度跨学科的，来自几个部门的参与者，包括化学工程，机械工程，材料，化学，物理和生物学。 对这些系统的流动行为的研究一直是一个核心和一致的焦点，在UCSB上进行了许多创新。 该奖项是为了获取商业流体的流变仪和氩离子激光器，以开发能够同时进行流变学和光学测量的高性能测量系统。 该仪器将用于研究复杂流体中的流与结构之间的关系。 流变仪能够对大分子溶液和悬浮液中的剪切和正常应力进行动态，瞬态和稳态测量。 在此流变仪中，我们将增加执行多个光学测量的能力，包括小角度和大角度散射，显微镜和流动双折射。 光学测量结果将提供有关伴随研究流体变化的结构变化的关键信息。 通过同时执行流变学和结构测量，该仪器将显着推进最新的仪器，并为理解复杂流体的流动和处理提供独特而有力的工具。 ***