The Amphoteric Ion Exchange Membrane Based on CS/CMC for Tobacco-Protein Adsorption and Separation from Tobacco Extract

Figure 2

SEM images of CS/CMC blend membranes with the CMC content of 20 wt%: (a) surface, 500x; (b) surface, 1000x; (c) cross-section, 500x; (d) cross-section, 1000x.

(a)

(b)

(c)

(d)