Preparation, characterization and gas permeation study of PSf/MgO nanocomposite membrane

Abstract

-Nanocomposite membranes composed of polymer and inorganic nanoparticles are a novel method to enhance gas separation performance. In this study, membranes were fabricated from polysulfone (PSf) containing magnesium oxide (MgO) nanoparticles and gas permeation properties of the resulting membranes were investigated. Membranes were prepared by solution blending and phase inversion methods. Morphology of the membranes, void formations, MgO distribution and aggregates were observed by SEM analysis. Furthermore, thermal stability, residual solvent in the membrane film and structural ruination of membranes were analyzed by thermal gravimetric analysis (TGA). The effects of MgO nanoparticles on the glass transition temperature (T g ) of the prepared nanocomposites were studied by differential scanning calorimetry (DSC). The T g of nanocomposite membranes increased with MgO loading. Fourier transform infrared (FTIR) spectra of nanocomposite membranes were analyzed to identify the variations of the bonds. The results obtained from gas permeation experiments with a constant pressure setup showed that adding MgO nanoparticles to the polymeric membrane structure increased the permeability of the membranes. At 30 wt% MgO loading, the CO 2 permeability was enhanced from 25.

Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

“…Membrane technology plays an important role in various environmental and energy processes, such as CO 2 capture (Zou and Ho, 2008;Hussain and Hägg, 2010;Brunetti et al, 2010;Yang et al, 2008), biogas upgrading (Deng and Hägg, 2010;Makaruk et al, 2010;Pakizeh et al, 2013;Momeni and Pakizeh, 2013), natural gas sweetening (Bernardo et al, 2009;Peters et al, 2011;Baker and Lokhandwala, 2008), and hydrogen production (Sà et al, 2009;Clem et al, 2006) and can potentially compete with some traditional separation methods in terms of energy requirements and economic costs (Xuezhong and Hägg, 2012).…”

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO2/CH4 separation

“…T g value for pure PSF is in accordance with the literature reported T g of pure PSF. 30 DSC results for a composite membrane with coating time of 10 min also exhibited single T g at 174.13 8C. This indicates the complete phase transition between PDMS and PSF, stating that PDMS and PSF were homogeneously crosslinked together in composite membrane.…”

γ Irradiation effects on optical, thermal, and mechanical properties of polysulfone/MWCNT nanocomposites in argon atmosphere

“…If a polymer has a higher affinity to filler, it will demonstrate reduced mobility and reduced free volume and a higher T g . Momeni and Pakizeh have shown that increase in MgO nanoparticles loading in PSU matrix increased the T g of PSU.…”