Preparation and Characterization of Polyphenylsulfone (PPSU) Membranes for Biogas Upgrading.

ABSTRACT: Asymmetric polyphenylsulfone (PPSU) membranes were fabricated by a non-solvent induced phase inversion method. Glycerin and silica nanoparticles were added into the polymer solution to investigate their effects on the material properties and gas separation performance of prepared membranes. The morphology and structure of PPSU membranes were analyzed by scanning electron microscopy (SEM), the surface roughness of the selective layer was analyzed by atomic force microscopy (AFM), and the surface free energy was calculated based on the contact angle measurements by using various solvents. The gas separation performance of PPSU membranes was estimated by measuring the permeability of CO2 and CH4. The addition of glycerin as a nonsolvent into the polymer solution changed the cross-section stru

SUBMITTER: Kujawski W 

PROVIDER: S-EPMC7345145 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature