The studies on novel magnetic polyimide inorganic-organic hybrid membranes for air separation

Characteristics of Inorganic–Organic Hybrid Membranes Containing Carbon Nanotubes with Increased Iron-Encapsulated Content for CO2 Separation

“…The present publication is a continuation of previous research [44][45][46][47][48][49][50][51], which confirmed the positive effect of the magnetic addition on the mechanical, magnetic, and gas transport properties of the tested composites.…”

Modeling of Gas Permeation through Mixed-Matrix Membranes Using Novel Computer Application MOT

“…Our research group has been conducting research on the application of inorganic-organic hybrid membranes in the separation of gas mixtures. Earlier research concerned membranes based on various polymer matrices such as ethylcellulose (EC), poly(2,6-dimethyl-1,4-phenylene oxide) (PPO), sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO), linear and hyperbranched polyimides (LPI and HBPI) as well as magnetic powders and iron-encapsulated multi-wall carbon nanotubes (Fe@MWCNT) as inorganic fillers [20][21][22][23][24][25][26][27]. During this research, it was found necessary to have a suitable tool that would allow for the optimal selection of hybrid membrane components.…”

“…The analyzed gases were fed to the apparatus from compressed gas cylinders. The measurements were performed at 25 • C. The flow-rate and percentage-of-the-air enrichment data were used to evaluate the mass transport coefficients (P and α) [20][21][22][23][24][25][26][27].…”

Hybrid organic–inorganic membranes based on sulfonated poly (ether ether ketone) matrix and iron-encapsulated carbon nanotubes and their application in CO2 separation

“…Gas (CO 2 and N 2 ) permeability measurements were carried out for membranes using the lowpressure gas permeation analyzer IDP-2, described elsewhere [49][50][51] at the temperature of 25 C. These ow-rate data were used to obtain the mass transport coefficients (D, P, S, and a), using the Time Lag method. [52][53][54][55] The mechanical and magnetic properties of obtained hybrid membranes were tested on a Zwick/Roell Z050 static testing machine and with the Lake Shore 7010 vibration magnetometer (VSM). On the other hand, the cross-sections of the membranes cut on the microtome were examined with the JEOL 1200 transmission electron microscope at an acceleration of 120 kV.…”