@misc{khan_enhanced_gas_2013, 
author={Khan, M.M.,Filiz, V.,Bengtson, G.,Shishatskiy, S.,Rahman, M.M.,Lillepaerg, J.,Abetz, V.},
title={Enhanced Gas Permeability by Fabricating Mixed Matrix Membranes of Functionalized Multiwalled Carbon Nanotubes and Polymers of Intrinsic Microporosity (PIM)},
year={2013},
howpublished = {journal article},
doi = {https://doi.org/10.1016/j.memsci.2013.02.032},
abstract = {In this study, mixed matrix membranes (MMM) consisting of multi-walled carbon nanotubes (MWCNTs) embedded in PIM-1 matrix have been fabricated via solution casting method and their gas transport properties are investigated. The MWCNTs were chemically functionalized with polyethylene glycol (PEG) for a better dispersion in the polymer matrix. The effect of functionalized MWCNTs (f-MWCNTs) loading on gas permeation properties of the MMM were investigated by varying the MWCNTs loading in a PIM-1 matrix from 0.5–3.0 wt %. The derived MMM were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and single gas permeation tests. Gas permeation measurements showed that MMM incorporated with modified and non-modified CNTs exhibited different gas separation performance. The f-MWCNT MMM show better performance compared to MMM with non-modified CNTs in terms of dispersion and permeability at 2 wt% f-MWCNTs loading without sacrificing selectivity. According to diffusivity and solubility data derived from the time-lag method, the PEG chains on MWCNTs show interaction with CO2 as indicated by an increase of the solubility of the polar gas and a reduction of the solubility of non-polar gas, which is advantageous for CO2/N2 separation. The mechanical properties and experimental sorption isotherms of CO2 and N2 of the f-MWCNTs/PIM MMM were enhanced as well.},
note = {Online available at: \url{https://doi.org/10.1016/j.memsci.2013.02.032} (DOI). Khan, M.; Filiz, V.; Bengtson, G.; Shishatskiy, S.; Rahman, M.; Lillepaerg, J.; Abetz, V.: Enhanced Gas Permeability by Fabricating Mixed Matrix Membranes of Functionalized Multiwalled Carbon Nanotubes and Polymers of Intrinsic Microporosity (PIM). Journal of Membrane Science. 2013. vol. 436, 109-120. DOI: 10.1016/j.memsci.2013.02.032}}