Acquisition of X-Ray Diffractometer for Polymer Research and Education

购置 X 射线衍射仪用于聚合物研究和教育

• 批准号: 0319654
• 负责人: Jerome Lando
• 金额: $ 13.2万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0319654&HistoricalAwards=false
• 关键词: Acquisition; Ray; Diffractometer; Polymer; Research

This funding action supports the acquisition of a Rigaku MSC wide angle X-ray diffractometer for structural analysis of polymer samples at Case Western Reserve University. This equipment is an essential in-house facility for a large polymer research center. It is also used to instruct undergraduates and graduate students in formal laboratory courses on polymer characterization. X-ray analysis is the method of choice for defining structural changes in many polymer systems that occur as a result of different processing conditions, environmental factors, physical/mechanical history, etc. Thus the diffractometer will be the workhorse for investigation of polymer structure, detection and identification of crystal structures, and determination of degree of crystallinity and crystallite size. The new equipment replaces a now obsolete diffractometer (purchased in the mid-1980s) and will have additional capabilities that make possible the routine rapid acquisition of X-ray data at different temperatures (-180 C to 300 C) and various controlled environmental conditions. The software package will automate determination of degrees of crystallinity, crystallite size and unit cell dimensions, and will permit Rietveld refinement of structure and X-ray data simulation. It will also have attachments that will allow the study of thin film structure and morphology including thin film pole figures. It is clear from research projects described in this request that this instrument will have impact on a wide range of research. Graduate students and undergraduate students are involved in the described research. The interdisciplinary nature of the need for the equipment is indicated by the interest shown by university scientists (twelve members of the Department of Macromolecular Science, two members of the Department of Chemical Engineering, one from the Department of Electrical Engineering and two members of the Physics Department).

这项资助行动支持凯斯西储大学购买 Rigaku MSC 广角 X 射线衍射仪，用于聚合物样品的结构分析。该设备是大型聚合物研究中心必不可少的内部设施。它还用于指导本科生和研究生进行聚合物表征的正式实验室课程。 X 射线分析是定义许多聚合物体系中由于不同加工条件、环境因素、物理/机械历史等而发生的结构变化的首选方法。因此，衍射仪将成为研究聚合物结构、检测和识别晶体结构以及确定结晶度和微晶尺寸的主力。新设备取代了现已过时的衍射仪（于 20 世纪 80 年代中期购买），并将具有额外的功能，使在不同温度（-180°C 至 300°C）和各种受控环境条件下常规快速采集 X 射线数据成为可能。该软件包将自动测定结晶度、微晶尺寸和晶胞尺寸，并允许 Rietveld 改进结构和 X 射线数据模拟。它还具有附件，可用于研究薄膜结构和形态，包括薄膜极图。从该请求中描述的研究项目可以清楚地看出，该工具将对广泛的研究产生影响。研究生和本科生参与了所描述的研究。大学科学家（高分子科学系十二名成员、化学工程系两名成员、电气工程系一名成员和物理系两名成员）表现出的兴趣表明了对设备需求的跨学科性质。