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(a) Particle size distribution of the PVP/CNC aerogels in water (for comparison, the curves for the neat PVP and CNC are shown): 1—PVP/CNC-4.6 aero; 2—PVP/CNC-10.9 aero; 3—PVP/CNC-16.3 aero; 4—PVP/CNC-19.6 aero; 5—PVP/CNC-28.9 aero; 6—PVP/CNC-37.9 aero; 7—PVP/CNC-54.5 aero. (b) Surface charge of PVP coated CNC particles after redispersion of the PVP/CNC aerogels in water.
