(438e) Synthesis and Characterization of Poly(amic-acid)-Silver Janus Nanoparticles for CO2 Separation Applications
- Conference: AIChE Annual Meeting
- Year: 2022
- Proceeding: 2022 Annual Meeting
- Group: Engineering Sciences and Fundamentals
- Time: Wednesday, November 16, 2022 - 9:00am-9:15am
In this study, Janus nanoparticles for CO2 separation were rationally designed and synthesized by chelating silver nanoparticles with poly(amic-acid)s. This approach also eliminates any compatibility issue when these particles are embedded in polymer materials, while introducing ether functional groups, which greatly enhance CO2 permeability and selectivity. The synthesized silver-PAA nanoparticles were thoroughly characterized via TEM/EDS analysis, showing that individual and un-aggregated particles with near spherical morphology (~5 nm) can be successful produced. The occurrence of the chelating reaction between silver and the PAA was confirmed via FT-IR. Finally, the effect of the PAA length and ether functional group concentration on the structure and properties of nanoparticles was systematically investigated. The silver-PAA Janus nanoparticles were then embedded into a commercial polymer, Pebax, to fabricate defect-free mixed matrix membranes for CO2 separation, whose structure and transport properties were systematically investigated.