Abstract
The fusion of amine carriers into rubbery or glassy polymeric membranes is always preferred over neat polymeric membranes due to their enhanced CO2/other gas separation (GS) performances. However, few studies compare the effects of amino acids grafting with polymer matrix, and their contribution to GS performance. In this study, a facilitated transport-cum-solution diffusion-based chitosan (CS) membranes were fabricated by utilizing L-Phenyalanine (Phe) and L-tyrosine (Tyr) amino acids via the solution casting method. The fabricated membranes were systematically investigated to characterize their chemical, mechanical and thermal stabilities using various characterization techniques. The GS tests with 20% CO2 and 80% N2 mixed gas were conducted at 85 °C and 2.21 bar feed pressure under humid conditions. The results suggest that the grafting of Phe and Tyr with CS matrix boosted the CO2 permeance and CO2/N2 selectivity of the fabricated membranes, respectively, when compared to the bare CS membrane under similar experimental conditions. The stability tests were also conducted for both types of membranes. The results suggest that chemical grafting show stable results when the membranes were tested for a long run of almost 150 hours.
Details
Presentation Type
Paper Presentation in a Themed Session
Theme
KEYWORDS
Carbon capture, Membrane Technology, Polymer grafting, Biodegradable materials
