Polyimide-Silica Hybrid Membranes for Gas Separation Applications

用于气体分离应用的聚酰亚胺-二氧化硅混合膜

• 批准号: 9905549
• 负责人: Eva Marand
• 金额: $ 24万
• 依托单位: Virginia Polytechnic Institute and State University
• 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: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905549&HistoricalAwards=false
• 关键词: Polyimide; Silica; Hybrid; Membranes; Gas

This proposal describes research into the synthesis and characterization of hybrid inorganic-organic membranes (polyimide-silica materials) for use in chemical separations. The area of hybrid materials has begun to attract the attention of the research community in recent years, because it promises to bring the best characteristics of each precursor material to the hybrid compound. Inorganic materials have the ability to show high selectivities, are resistant to corrosive environments, but difficult to process into versatile mechanical structures. Polymeric membranes do not show the same degree of selectivity as inorganic compounds, and are often thermally labile, but easier to process into convenient forms like hollow fibers-using injection moulding technology. The key identified in this hybrid approach is to develop synthesis techniques that allow both the organic and inorganic precursor materials to form covalent crosslinkages that will lead to stability of the resultant membranes.

该提案描述了用于化学分离的混合无机-有机膜（聚酰亚胺-二氧化硅材料）的合成和表征的研究。 近年来，杂化材料领域开始引起研究界的关注，因为它有望将每种前体材料的最佳特性带到杂化化合物中。 无机材料具有显示高选择性的能力，耐腐蚀性环境，但难以加工成通用的机械结构。 聚合物膜不显示出与无机化合物相同程度的选择性，并且通常是热不稳定的，但更容易使用注塑成型技术加工成方便的形式，如中空纤维。 在这种混合方法中确定的关键是开发允许有机和无机前体材料形成共价交联的合成技术，这将导致所得膜的稳定性。