SBIR Phase I: Microporous Perfluoropolymers via Thermal Inversion Polymer Separation

SBIR 第一阶段：通过热反转聚合物分离制备微孔全氟聚合物

• 批准号: 9761249
• 负责人: Malcolm Smook
• 金额: $ 10万
• 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: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 1998-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9761249&HistoricalAwards=false
• 关键词: SBIR; Phase; Microporous; Perfluoropolymers; via

*** 9761249 Plimmer This Small Business Innovation Research Phase I project proposes development of microporous perfluoromembranes (both flat sheet and hollow fiber) via thermal inversion phase separation process (TIPS). Numerous polymers (e.g. polysulfone, cellulose ester) are fabricated into microporous flat sheet and hollow fiber membranes by solution based phase inversion. The TIPS process has been developed for polyolefins which do not lend themselves to conventional solution processes. Earlier attempts to fabricate microporous perfluoromembranes by the TIPS process have been limited by the high temperature and the associated volatility of the additive oils. In this program, new families of soluble, non-volatile, non-crystalline, perfluoropolymers will be melt-blended with the crystalline, thermoplastic perfluoropolymer targeted for the TIPS process. Conventional TIPS processing, followed by solvent extraction, should produce the desired microporous perfluoromembrane. In Phase 1, we will demonstrate proof of concept on flat sheets and also evaluate coatings of these microporous membranes. In Phase 11, we will (1) scale-up the operation, (2) do pilot testing, and (3) evaluate both flat sheet and hollow fibers. Microporous perfluoromembranes are presently only available in flat sheet form (e.g. "Goretex"). The development of perfluoro based TIPS hollow fiber and flat sheet products will greatly expand the market. This includes harsh chemical filtration, gas venting, and electronics applications. ***

*** 9761249 Plimmer 该小型企业创新研究第一阶段项目建议通过热反转相分离工艺 (TIPS) 开发微孔全氟膜（平板和中空纤维）。 通过基于溶液的相转化将许多聚合物（例如聚砜、纤维素酯）制成微孔平板和中空纤维膜。 TIPS 工艺是针对不适合传统溶液工艺的聚烯烃而开发的。早期通过 TIPS 工艺制造微孔全氟膜的尝试受到高温和添加剂油相关挥发性的限制。 在此计划中，新系列的可溶性、非挥发性、非结晶全氟聚合物将与 TIPS 工艺所针对的结晶热塑性全氟聚合物熔融共混。 传统的 TIPS 处理，然后进行溶剂萃取，应该可以生产出所需的微孔全氟膜。 在第一阶段，我们将在平板上演示概念验证，并评估这些微孔膜的涂层。 在第 11 阶段，我们将 (1) 扩大运营规模，(2) 进行试点测试，以及 (3) 评估平板和中空纤维。 微孔全氟膜目前仅以平板形式提供（例如“Goretex”）。 全氟基TIPS中空纤维和平板产品的开发将大大拓展市场。 这包括严酷的化学过滤、气体排放和电子应用。 ***