Development of Membrane Materials Using Ion Beam Irradiation of Aromatic Polymers

利用离子束辐照芳香族聚合物开发膜材料

• 批准号: 9975452
• 负责人: Maria Coleman
• 金额: $ 24万
• 依托单位: University of Toledo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-12-15 至 2003-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9975452&HistoricalAwards=false
• 关键词: Development; Membrane; Materials; Using; Ion

AbstractProposal number: CTS-9975452Proposal type: Investigator InitiatedPrincipal investigator: Maria R. ColemanAffiliation: University of ToledoDevelopment of Membrane Materials Using Ion Beam Irradiation of Aromatic PolyimidesIon-beam irradiation is being investigated as a method to modify systematically the gas-transport properties of polymeric membranes in order to develop membrane systems for applications in harsh environments. Numerous studies indicate that there is a significant evolution in the chemical structure and microstructure as well as in the properties of polymers following exposure to irradiating ions at increasing ion fluences. Proof-of-concept studies by this research group indicate that H+ irradiation of polyimide membranes results in combined increases in both permeability and permselectivity relative to the virgin membranes. A systematic investigation of the impact of ion-beam irradiation on the microstructure, chemical structure, and gas transport properties of a series of polyimides will be performed. The results of this study will clarify the mechanism of microstructural evolution in the polyimides and the relationship between this microstructure and the gas-transport properties of the irradiated polymers.

摘要提案号：cts -9975452提案类型：发起人：主要研究者：Maria R. colemana合作院校：托莱多大学离子束辐照膜材料芳香族聚酰亚胺离子束辐照是一种系统地改变聚合物膜的气体传输特性的方法，以开发适用于恶劣环境的膜系统。许多研究表明，暴露于辐照离子后，聚合物的化学结构和微观结构以及性能都发生了重大变化。该研究小组的概念验证研究表明，与原始膜相比，聚酰亚胺膜的H+辐照导致渗透率和过电选择性的综合增加。系统地研究了离子束辐照对一系列聚酰亚胺的微观结构、化学结构和气体输运性能的影响。本研究结果将阐明聚酰亚胺中微观结构演变的机理，以及这种微观结构与辐照聚合物气体输运性能的关系。