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 Pine在过去的十年里，加州大学圣巴巴拉分校已经成为研究复杂液体的主要中心之一，并在了解聚合物溶液、胶体悬浮液、表面活性剂体系和生物材料方面取得了根本性的进展。对这些系统的研究是高度跨学科的，参与者来自几个系，包括化学工程、机械工程、材料、化学、物理和生物。对这些系统的流动行为的研究一直是一个中心和一致的焦点，UCSB正在开发许多创新。%该合同是为了获得一台商用流体流变仪和一台Ar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流动和结构之间的关系。该流变仪能够对大分子溶液和悬浮液中的剪切应力和法向应力进行动态、瞬时和稳态测量。在这款流变仪上，我们将增加执行几种光学测量的能力，包括小角和大角度光散射、显微镜和流动双折射。光学测量将提供有关结构变化的关键信息，这些变化伴随着所研究的流体的流变性变化。通过同时执行流变学和结构测量，该仪器将极大地推进最先进的技术，并为了解复杂流体的流动和加工提供独特而强大的工具。***