On this work, a Pluronic/Dextran system was developed to unlock the mechanistic concerns of the aqueous two-phase extraction (ATPE) approach, which is extensively employed for the sorting of single-walled carbon nanotubes (SWCNTs) and different forms of nanomaterials. The position of the phase-forming elements and partitioning modulators was comprehensively investigated to achieve better insights into the differentiation course of. The obtained outcomes revealed that sodium dodecyl sulfate and sodium dodecylbenzene sulfonate operated as wonderful partitioning modulators, enabling the diameter-based sorting of SWCNTs. Moreover, the info strongly prompt that completely different densities of assorted SWCNT species drove the motion of SWCNTs in ATPE system. Consequently, the most important diameter SWCNTs have been first influenced by the surfactant and, thus, the nanotubes migrated in the direction of the decrease density high part within the following order (7,5) > (8,3) > (6,5) > (6,4). Based mostly on in-depth evaluation of the partitioning system, a mechanism was proposed that described the strategy by which widespread ATPE separation approach operates.