“…Over the decades, numerous studies and researches have been undertaken to demonstrate the advantages of the CAB membrane in the gas separation field as well as separation of CO 2 from flue gas due to its high emission since the industrial revolution. 15 Nevertheless, no studies have been conducted to evaluate the effect of blending different ratios of the CAB polymer with Mn of 12000, 70000 and 30000 with the polar acetyl group of 16-19 wt%, 12-15 wt% and 12-15 wt%, respectively, on the separation of the non-polar CO 2 /N 2 . It is believed that this work will contribute significantly towards the environment with its high permeation rate, high selectivity, energy efficient and low-cost characteristics.…”