| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 103 === The concentration of CO2 exceed 800 ppm indoors,making people feel dizzy and uncomfortable. Therefore, this study shows how to reduce the CO2 concentration indoors by using solid membrane for gas separation.
In this investigation, the solid membrane is made by blending polyvinyl alcohol (PVA) and poly(allylamine) PAA solution, coating on surface of reverse osmosis membrane via Spin Coater. The separation layer formed after dry. This separation layer is modified by hydroxyl and amine functional groups. Therefore, it will be more selective and enable to capture CO2. The next step, we use FTIR and SEM to characterize the surface of reverse osmosis membrane
The result shows, when in lower input gas pressure, CO2 gas has larger gas permeability (GP) value than nitrogen at room temperature. When pressure is 0.75 cmHg, 1 wt% PVA+7 wt% PAA has greatest CO2/N2 gas selectivity ratio. The selectivity is 10.7.
|
|---|
