Moisture Sorption Isotherms and Prediction Models of Carboxymethyl Chitosan Films from Different Sources with Various Plasticizers

Figure 1

The FTIR spectra of native chitosan and CMCH: shrimp polymer and shrimp polymer CMCH (a); shrimp oligomer and shrimp oligomer CMCH (b); crab polymer and crab polymer CMCH (c); crab oligomer and crab oligomer CMCH (d); squid polymer and squid polymer CMCH (e); squid oligomer and squid oligomer CMCH (f).

(a)

(b)

(c)

(d)

(e)

(f)