Pebax-1657 mixed matrix membrane containing surface modified multi-walled carbon nanotubes for gas separation

Abstract

In this study different functional groups on the surface of carbon nanotube enhanced the performance of Pebax 1657/MWNTs.

Study on CO2 facilitated separation of mixed matrix membranes containing surface modified MWCNTs

“…The characteristic band at 3200‐3500 cm −1 can be assigned to OH and NH 2 stretching vibration . The band around 1660 cm −1 can be assigned to NH in plane bending motion according literature . The band at 1245 cm −1 can be assigned to CN stretching.…”

“…The wide peak in the range of 3200‐3500 cm −1 were assigned to OH stretching vibration and NH 2 formed, indicating the intermolecular hydrogen bonds formed. The absorbance band at 2913 and 2850 cm −1 was due to the CH and CC stretching vibration . The bands at 1660 cm −1 can be assigned to NH 2 .…”

“…The absorbance band at 2913 and 2850 cm −1 was due to the CH and CC stretching vibration . The bands at 1660 cm −1 can be assigned to NH 2 . And the peak at 1097 cm −1 can be assigned to CO.…”

Pebax/MWCNTs‐NH2 mixed matrix membranes for enhanced CO2/N2 separation

“…The presence of polyamide and ethylene oxide in Pebax makes it particularly valuable. Polyamide (PA) is a hard segment with almost zero permeability that gives mechanical strength to the membrane framework, whereas polyether (PE) is a soft segment which provides the sites for gas molecules to permeate 6,8 …”

“…For MMMs, there are a variety of options for inorganic fillers, such as carbon nanotubes (CNTs), 6–8,15–17 zeolites, 18,19 silicas, 20,21 and metal‐organic frameworks, 22 which have been studied and shown good separation performance. Recently, several elaborate overviews of the current status and future challenge of MMMs on carbon capture were reported, where the advanced materials used in MMMs were discussed in detail 23–26 .…”