Fabrication, characterisation and CO<SUB align="right">2/N<SUB align="right">2 gas permeance study of novel blended membrane

Abstract

The CO 2 gas is the primary green house gas, which is the main cause of global warming. To capture CO 2 gas, it is important to study the permeance behaviour of CO 2 and N 2 gases from different membranes. In this work, 5,11,17,23-Tetra-tert-butyl-25,27-bis-(2-piprazinoethyl)-26-dihydroxycalix[4]arene (CLP) was blended into cellulose acetate (CA) membrane to be used for gas permeation. Diffusion induced phase separation (DIPS) method was applied to fabricate membranes. The CA/CLP membranes were fabricated by varying concentration of CLP with respect to CA at 10wt%, 20wt%, 30wt% and 40wt%.The prepared membranes were characterised via Fourier transform infra red (FTIR) spectroscopy, scanning electron microscopy (SEM) and atomic force microscopy (AFM). CO 2 and N 2 gases were used for the gas permeation experiments. The increasing trend was observed in permeance of N 2 gas as compared to CO 2 gas for CA-CLP blended membranes.Fabrication, characterisation and CO 2 /N 2 gas permeance 533