10.6084/m9.figshare.5666713.v1
Elisângela Aparecida da Silva
Elisângela Aparecida da
Silva
Dario Windmöller
Dario
Windmöller
Glaura Goulart Silva
Glaura Goulart
Silva
Kátia Cecília de Souza Figueiredo
Kátia Cecília de Souza
Figueiredo
Polydimethylsiloxane Membranes Containing Multi-walled Carbon Nanotubes for Gas Separation
SciELO journals
2017
carbon dioxide
gas separation
mixed matrix membranes
multi-walled carbon nanotubes
polydimethylsiloxane
2017-12-05 08:48:54
Dataset
https://scielo.figshare.com/articles/dataset/Polydimethylsiloxane_Membranes_Containing_Multi-walled_Carbon_Nanotubes_for_Gas_Separation/5666713
<div><p>Polydimethylsiloxane (PDMS) membranes with different concentrations of multi-walled carbon nanotubes were prepared in order to evaluate their gas separation performances. Mixed matrix membranes were characterized by scanning electron microscopy, thermogravimetric analysis, Fourier transformed infrared, positron annihilation lifetime and Raman spectroscopies and X-ray diffraction. The permeabilities to CO2, CH4, N2 and O2 were determined. No phase separation was noticed. For carbon nanotubes content of 1 wt%, it was shown a decrease in membrane permeability with slight increase in ideal selectivity, compared to pure PDMS. However, the increase in the filler load up to 6.7 wt% increased the free volume average size of the membranes, improving the contribution of the diffusion to the transport and decreasing ideal selectivities of CO2/CH4, CO2/N2 and O2/N2.</p></div>