There are confusion of comparative dispersibility of MWCNT in Ethanol and Acetone for their separation and also for their compatibility for nanostructured devices like FET, junction diode.
CNTs can be formed as single-walled nanotubes (SWCNTs) which are either semiconducting or metallic depending on their chirality and multi-walled nanotubes (MWCNTs) which are metallic. For FET devices, requires separating the metallic CNTs out of the mix with SWCNTs
So, swcnt more suitable for electronic devices applications.