The data in Figure indicates that the BMI models did not exhibit the same initial steep trend with the interaction energy as observed with the epoxy. However, unlike the epoxy, increases in the interaction energy were observed with increases in the mass fraction over the entire range of mass fractions. This behavior is attributed to the preferential adsorption of the BMPM molecules. The molecular models in this study indicate that BMPM binds better with flCNT than DABPA, which is exemplified in Error! Reference source not found.. In Error! Reference source not found., the largest flCNT/BMI monomer model, with a monomer mass fraction of 0.66, was divided into equal-width (about 0.7 Å) slices along the Z-direction. The flCNT, BMPM, and DABPA atoms in each slice were counted separately to reveal the molecular spatial variation. The flCNT appears as two sets of double spikes. Note that some waviness in the flCNT caused the peaks to broaden in comparison with perfectly straight layers . The BMPM and DABPA spatial distributions are strikingly contrasting. Immediately flanking the flCNTs are high concentrations of BMPM, but in the same region, the DABPA atoms are depleted. Moving further away from the flCNT layers, the concentration of DABPA increases and becomes more prominent. Essentially, Error! Reference source not found. reveals partial monomer separation: the BMPM monomers move toward the flCNT, while the DABPA monomers tend to be driven away from the flCNT. Section S4 from the supporting information provides a more qualitative analysis on BMPM planarization. The epoxy, also a two-part system, did not develop preferential adsorption of either of its components.