Engineering Research Equipment Grant: Fourier-Transform Infrared Spectrometer for the Characterization of SeparationMembranes

工程研究设备补助金：用于表征分离膜的傅里叶变换红外光谱仪

• 批准号: 8908037
• 负责人: Timothy Barbari
• 金额: $ 3.2万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8908037&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Fourier

The Fourier Transform Infrared Spectrometer (FTIR) Attenuated Total Reflectance (ATR) capability purchased with this award will be used primarily for three projects: (1) thickness determination of thin-film composite membranes for gas separations, (2) determination of crosslink density and its variation with depth for thin-gel composite membranes for bioseparations, and (3) determination of the mechanisms of interfacial polycondensation. The latter two projects are novel applications that take advantage of the depth-profiling capability of ATR-FTIR spectroscopy. Thin film, solution-diffusion, composite membranes are an attractive and versatile alternative to integrally-skinned asymmetric membranes. In-situ, interfacial polycondensation is one method of producing the selective film and has been used to produce composite membranes for reverse osmosis. It is currently being used to produce thin-film composite membranes for gas separations and thin-gel composite membranes. The ATR-FTIR capabilities will greatly improve the productivity of the group working on these projects.

根据该合同购买的傅里叶变换红外光谱仪（FTIR）衰减全反射（ATR）能力将主要用于三个项目：(1)测定气体分离用薄膜复合膜的厚度；(2)测定生物分离用薄凝胶复合膜的交联密度及其随深度的变化；(3)测定界面缩聚机理。后两个项目是利用ATR-FTIR光谱深度剖面能力的新应用。薄膜，溶液扩散，复合膜是一个有吸引力的和通用的替代整体蒙皮不对称膜。原位、界面缩聚是制备选择性膜的一种方法，已被用于制备反渗透复合膜。目前用于生产气体分离用薄膜复合膜和薄凝胶复合膜。ATR-FTIR功能将大大提高在这些项目中工作的团队的生产力。