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Percentages of carbon (C) and nitrogen (N), number of moles for chitosan (CH) and chemically modified chitosan (CH-AN), and the corresponding molar ratio (C/N).
| Sample | C/% | N/% | S/% | C/mmolg−1 | N/mmolg−1 | S/mmolg−1 | C/N |
|---|---|---|---|---|---|---|---|
| CH | 40.63 | 7.39 | − | 33.86 | 5.27 | − | 6.42 |
| CH-AN | 38.15 | 7.22 | 3.99 | 31.79 | 5.14 | 1.24 | 6.18 |
