Performance Investigation of the Membrane PEEK/PVA Modified with ZnO Nanoparticle for CO2 Separation

The characterization of morphological, particle size, mechanical, and thermal on the impactof membrane Polyetheretherketon/Polyvinylalcohol (PEEK/PVA) composite was modified with zinc oxide nanoparticles for Permeability and Selectivity of CO2 properties. Separation process was done at high pressures since the selectivity of CO2 boosted from 94.0 at 1 bar with increasing feed pressure. Also, the permeability of CO2 for membrane PEEK/PVA/ZnO nanoparticle modified with PEEK/PVA composite was performed. The increase in CO2 permeability to the membrane PEEK/PVA from 26.4 to 82.6 occurred upon modifying the surface area of the membrane PEEK/PVA/m-ZnONPs (1.0 wt%, 2.0 wt%, and 3.0 wt%), and increasing the percentage of this additive in the polymer matrix. The increase was due to the presence of cavities developed in the process of surface modification, and the increased of free volume and solubility of CO2 inside the polymer membrane.