Figure 2.
SEM image of materials: (a) chitosan, (b) CHIT-HTC-1, (c) CHIT-HTC-2, (d) CHIT-HTC-4, (e) CHIT-HTC-6, (f) CHIT-HTC-12, (g) CHIT-HTC-24, and (h) CHIT-HTC-48.
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