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Comparative SEM analysis of chitosan backbone, graft copolymerized samples and crosslinked samples (a) chitosan, (b) Chit-g-polymer (NIPAAM) (c) Chit-g-polymer (NIPAAM-co-AA) (d) Chit-g-polymer (NIPAAM-co-AAm) (e) Chit-g-polymer (NIPAAM-co-AN).
