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Particle size distribution of re-dispersed freeze-dried PAM/CNC composites in water with different CNC content (wt.%) (the neat CNC curve is shown for comparison): 50.3 (1), 40.1 (2), 29.8 (3), 19.7 (4), 10.3 (5), and 4.6 (6) (a); CNC particle surface charge in aqueous suspensions (CNC concentration of 0.07 wt.%) in the presence of PAM (1) and particle surface charge of the freeze-dried PAM/CNC composites after re-dispersion in water (2) (b).
