Effect of VTMS-Modified TiO₂ Nanoparticles on CO₂ Separation Performance of Polysulfone-Based Mixed Matrix Membranes.

ABSTRACT: Polysulfone (PSF), despite its excellent thermal and mechanical stability, exhibits moderate gas separation performance and poor compatibility with inorganic fillers, resulting in interfacial voids and structural defects. This study addressed these limitations by incorporating vinyltrimethoxysilane (VTMS)-functionalized TiO₂ nanoparticles into PSF matrix to develop mixed matrix membranes (MMMs) for selective CO₂/N₂ separation. Membranes with 1-5 wt.% VTMS@TiO₂ loadings were fabricated via solution casting, and their gas separation performance was systematically evaluated. VTMS modification enhanced the dispersion and interfacial adhesion of TiO₂ within the PSF matrix, as confirmed by SEM, FTIR, XRD, and TGA analyses. The 4 wt.% VTMS@Ti

SUBMITTER: Alsaady M 

PROVIDER: S-EPMC12734554 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature