IMR: Development of an X-ray Modified Rheometer for Synchrotron Polymer Research and Education

IMR：开发用于同步加速器聚合物研究和教育的 X 射线改性流变仪

• 批准号: 0415345
• 负责人: Benjamin Hsiao
• 金额: $ 12万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0415345&HistoricalAwards=false
• 关键词: IMR; Development; ray; Modified; Rheometer

The purpose of this project is to develop a unique stress-controlled rheometer to be adapted in the synchrotron scattering facility (e.g. Advanced Polymers Beamline, APB, (X27C) at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory (BNL)) and in combination with Raman spectroscopy at Stony Brook. The modifications of the stress-controlled rheometer, including the installation of x-ray paths, x-ray windows, beam monitoring device, sample monitoring system and translational stages for beam targeting, which will enable in-situ scattering/diffraction studies, and minor modifications for adaptation with the fiber optic Raman Spectrometer at Stony Brook. The proposed instrumentation is the first of its kind for synchrotron research in the world. It will be particularly useful for the polymers and soft materials communities to engage cutting-edge research projects, such as flow-induced phase transitions and hierarchical structural changes in polymer melts, block copolymers, nanocomposites, complex fluids, structured gels and biological systems.%%%The purpose of this project is to develop a unique stress-controlled rheometer to be adapted in the synchrotron scattering facility (e.g. Advanced Polymers Beamline, APB, (X27C) at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory (BNL)) and in combination with Raman spectroscopy at Stony Brook. The X27C beamline was commissioned in 1997 by a group of scientists from Stony Brook University and several industrial and government laboratories. The X27C facility is the first synchrotron beamline in the United States dedicated to chemistry/materials research (with emphasis on polymers). It uses state-of-the-art simultaneous small-angle x-ray scattering (SAXS) and wide-angle x-ray diffraction (WAXD) techniques to characterize structural changes of materials with length scales from 1 to 1000 Angstroms. The major benefit of this facility to the materials community is that no extensive synchrotron experience and equipment preparation are required from general users to carry out cutting-edge experiments. Today, X27C has become a major workhorse serving the U.S. polymer community for time-resolved and in-situ SAXS/WAXD studies. More than 350 users from over 100 user groups (i.e. over 70 research institutes) have carried out experiments at these beamlines in the past six years. Thus, we envision that this unique instrument will not only provide new capability to discover fundamental phenomena in materials, but will also provide new education opportunities to students, scientists and engineers with little x-ray and/or rheological experiences.

该项目的目的是开发一种独特的应力控制流变仪，适用于同步加速器散射设施（例如布鲁克海文国家实验室 (BNL) 国家同步加速器光源 (NSLS) 的先进聚合物光束线 (Advanced Polymers Beamline)、APB、(X27C)）并与石溪分校的拉曼光谱相结合。对应力控制流变仪进行了改造，包括安装 X 射线路径、X 射线窗口、光束监测装置、样品监测系统和光束瞄准平移台，这将实现原位散射/衍射研究，并进行较小的改进为适应石溪光纤拉曼光谱仪而进行的修改。所提出的仪器是世界上第一个用于同步加速器研究的仪器。对于聚合物和软材料界来说，参与尖端研究项目尤其有用，例如聚合物熔体、嵌段共聚物、纳米复合材料、复杂流体、结构化凝胶和生物系统中的流动诱导相变和分层结构变化。% %%该项目的目的是开发一种独特的应力控制流变仪，以适应同步加速器散射设施（例如国家同步加速器光源的高级聚合物光束线，APB，（X27C）） （NSLS）、布鲁克海文国家实验室（BNL））并与石溪分校的拉曼光谱相结合。 X27C 光束线于 1997 年由石溪大学和几个工业和政府实验室的一组科学家委托进行。 X27C 设施是美国第一条致力于化学/材料研究（重点是聚合物）的同步加速器光束线。它使用最先进的同步小角 X 射线散射 (SAXS) 和广角 X 射线衍射 (WAXD) 技术来表征长度尺度从 1 到 1000 埃的材料的结构变化。该设施对材料界的主要好处是，普通用户不需要丰富的同步加速器经验和设备准备即可进行尖端实验。如今，X27C 已成为美国聚合物界时间分辨和原位 SAXS/WAXD 研究的主要主力。过去六年，来自 100 多个用户组（即 70 多个研究机构）的 350 多名用户在这些光束线上进行了实验。因此，我们设想这种独特的仪器不仅将提供发现材料中基本现象的新能力，而且还将为缺乏 X 射线和/或流变学经验的学生、科学家和工程师提供新的教育机会。