NOVEL TRIPTYCENE-BASED POLYMERS OF INTRINSIC MICROPOROSITY FOR MEMBRANE GAS SEPARATION APPLICATIONS

摘要

High-performance polymeric gas separation membranes have important applications in hydrogen recovery, natural gas purification, onsite nitrogen production from air as well as carbon dioxide separation from flue gas. Ideal membranes should be both highly permeable and selective. Rational molecular design of polymeric materials is the key to creating new membranes with superior gas separation properties. To enhance gas permeability, an effective strategy is to introduce intrinsic micropores into highly rigid, glassy polymers that can increase both gas solubility and gas diffusivity. Polymers with intrinsic microporosity have been known since the development of di-substituted polyacetylenes in the 1980s.