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Swelling ratio of (A) LCS-acetate, (B) LCS-succinate, and (C) LCS-citrate, with various ratios of HEC compressed at 0.5, 1, and 1.5 tons.
Abbreviations: A, acetic acid; S, succinic acid; C, citric acid; LCS, chitosan 50–190 kDa; HEC, hydroxyethyl cellulose.
