Functionalization of Multi-Walled Carbon Nanotubes (MWNTs) for Sulfonated Polyether Ether Ketone (SPEEK)/MWNT Composite Elaboration

In this study, we present the covalent functionalization of pristine multi-walled carbon nanotubes (P-MWNTs) with sulphonate poly(ether ether ketone) (SPEEK) chains, employing hexane diamine as an interlinking molecule. SPEEK-functionalized MWNTs were then used to create SPEEK-MWNT/SPEEK composites. We used FTIR spectroscopy to confirm the covalent attachment of the SPEEK chains to the MWNTs. XRD and TEM were used to characterize the morphology of the functionalized tubes and composites. We then evaluated the composite membranes for their structure and elastic modulus. Our results show that SPEEK-grafted MWNT composites with 2% and 5 wt% SPEEK-MWNTs exhibited a 7.1% and 16.1% improvement in Young’s modulus, respectively, compared to SPEEK. However, oxidized MWNT/SPEEK membranes exhibited slightly better improvement.

Перевод пока недоступен