SBIR Phase I: Super Thin Film/High Free Volume Composite Membranes

SBIR第一期：超薄膜/高自由体积复合膜

• 批准号: 9560667
• 负责人: Stuart Nemser
• 金额: $ 7.47万
• 依托单位: COMPACT MEMBRANE SYSTEMS, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9560667&HistoricalAwards=false
• 关键词: SBIR; Phase; Super; Thin; Film

This Small Business Innovation Research Phase I project will evaluate various fabrication techniques to develop a three layer `super thin film composite` membrane with both high selectivity and high flux. At present this firm has demonstrated an ability to fabricate thin films (less than .5 micron) of glassy fluoropolymer onto microporous supports. By placing a super thin layer (50A to 200A) of high selectivity polymer on top of our non-porous glass fluoropolymer, the firm expects to fabricate membranes with both high selectivity and high flux. Techniques to establish this super thin layer (50A to 200A) include (a) chemical modification of surface, (b) coating of ultrathin layer on surface and (c) densification of top layer. To date, this concept has been very limited in that stable, high flux, high free volume non-porous membranes did not exist. In Phase I the firm will demonstrate the concept of super thin film composites. New glassy, high free volume fluoropolymers are described which show very high permeability to permeant gases, low permeability to volatile organics, good selectivity and excellent stability. The glassy nature allows easy fabrication into high flux non-porous thin film membranes. These unique fluoropolymers allow fabrication of novel and valuable membrane structures. Based on the excellent film forming capability, excellent gas flux and high selectivity of this glassy fluoropolymer, applications include production of oxygen enriched air for (I) industrial applications (i.e. glass/steel), (2) enhanced automotive power, fuel efficiency and reduced pollution, and (3) enhanced heating efficiency. The excellent chemical stability will be used in harsh chemical gas separations like H2/Cl2 in chlor-alkali processes or HF-fluorine separations.

这个小企业创新研究第一阶段项目将评估各种制造技术，以开发具有高选择性和高通量的三层“超薄膜复合”膜。目前，该公司已经证明了在微孔载体上制造玻璃态含氟聚合物薄膜（小于0.5微米）的能力。通过在我们的无孔玻璃含氟聚合物上放置一层超薄的高选择性聚合物（50 A至200 A），该公司希望制造具有高选择性和高通量的膜。建立这种超薄层（50 A至200 A）的技术包括（a）表面化学改性，（B）表面超薄层涂层和（c）顶层致密化。迄今为止，这种概念非常有限，因为不存在稳定、高通量、高自由体积的无孔膜。在第一阶段，该公司将展示超薄膜复合材料的概念。 本发明描述了新型玻璃状高自由体积含氟聚合物，其对渗透气体显示出非常高的渗透性，对挥发性有机物显示出低的渗透性，良好的选择性和优异的稳定性。玻璃质性质允许容易地制造成高通量无孔薄膜膜。这些独特的含氟聚合物允许制造新颖且有价值的膜结构。 基于该玻璃态含氟聚合物的优异的成膜能力、优异的气体通量和高选择性，应用包括生产用于（I）工业应用（即玻璃/钢）、（2）增强的汽车动力、燃料效率和减少的污染以及（3）增强的加热效率的富氧空气。优异的化学稳定性将用于苛刻的化学气体分离，如氯碱工艺中的H2/Cl 2或HF-氟分离。