Replacement of a research grade rheometer

更换研究级流变仪

• 批准号: RTI-2021-00432
• 负责人: Grecov, Dana
• 金额: $ 9.19万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718681
• 关键词: Replacement; research; grade; rheometer

Rheology is the science of studying how materials deform and flow with the application of forces. Complex fluids have internal structures which deform and reorient under the influence of deformation. Examples include polymers, nano-suspensions, liquid crystals, colloids, emulsions, foams and biological fluids. Understanding the flow of these materials is a challenging science involving experimentation, computation and modelling. An essential part of the research related to these materials involves measurement and characterization of their physical properties, using a rheometer. Since 2007 Grecov's research grade rotational rheometer has been a Kinexus, which is now inoperable. The applicants are requesting funding for a Netzsch Kinexus ultra + rheometer to replace the existent unit. A new magneto-rheology device (MRD) will be designed and built at UBC in collaboration with the manufacturer of the rheometer, Netzsch. The device will be used as an accessory to Kinexus rotational rheometer. Additional moduli (Tribological cell and Microscope) will be added to the basic configuration. The main need for this proposal stems from the fact that the current rheometer is inoperable and outdated. The rheometer is the key analytical tool used in Grecov's research. It will be used by almost all her graduate students. The additional accessories of the rheometer will strengthen the research and increase the impact of the work of the group. Delaying access to adequate tools will delay progress in this program and will affect the graduation schedule of the associated graduate students. For Chiao's research, the proposed equipment is critical. There is very few equipment that can measure magneto-mechanical properties of polymers. Without the proposed equipment, polymer properties can only be qualitatively estimated combining with computer simulation, that can be time consuming and inaccurate. Grecov's research program, supported by the NSERC Discovery Grant, “Novel high-performance lubricants for industrial and biomedical applications”, it will be undertaken using the proposed equipment. The same research program has been awarded a Discovery Accelerator Supplement. Supported by an NSERC Discovery grant, Chiao's lab has been working with PDMS polymers mixing with magnetic particles to form ?exible magnetic actuators. Chiao anticipates to use the new tool to measure the viscosity of the polymer solutions as functions of temperature and magnetic ?elds. The information will be needed to postulate the ?nal mechanical properties such as shear moduli after polymerization.

流变学是研究材料如何随着力的应用而变形和流动的科学。复杂的流体具有内部结构，这些结构在变形的影响下变形和重新定向。例子包括聚合物，纳米悬浮液，液晶，胶体，乳液，泡沫和生物学流体。了解这些材料的流程是科学，计算和建模的挑战。与这些材料相关的研究的重要组成部分涉及使用节省仪对其物理特性进行测量和表征。自2007年以来，Grecov的研究级旋转流变仪一直是Kinexus，现在无法使用。申请人要求资助Netzsch Kinexus Ultra +休闲仪以替换现有单元。新的Magneto-Rheology设备（MRD）将在UBC设计和建造，并与Netzsch的流变仪制造商合作。该设备将用作Kinexus旋转休斯的附件。其他模量（摩擦学细胞和显微镜）将添加到基本配置中。 从当前的流变仪无法使用和过时的事实，对此提案步骤的主要需求。流变仪是Grecov研究中使用的关键分析工具。她的所有研究生将使用它。节流计的其他配件将加强研究并增加小组工作的影响。延迟访问足够的工具将延迟该计划的进度，并会影响相关研究生的研究生时间表。对于Chiao的研究，拟议的设备至关重要。很少有设备可以测量聚合物的磁力机械性能。没有提议的设备，聚合物的性能只能是定性估计与计算机模拟结合的，这可能是耗时和不准确的。 Grecov的研究计划得到了NSERC Discovery Grant的支持，即“用于工业和生物医学应用的新型高性能润滑剂”，将使用拟议的设备进行。同样的研究计划已获得发现加速器补充剂。在NSERC Discovery Grand的支持下，Chiao的实验室一直在与PDMS聚合物与磁性颗粒混合以形成敏感的磁执行器。 Chiao预计将使用新工具来测量聚合物溶液的粘度作为温度和磁性元素的功能。需要这些信息来假设聚合后的机械性能，例如剪切模量。