Table 1.
Experimental data of molecular weight (MW) and degree of deacetylation (DDA) determinations for low molecular weight chitosans (LMWCs).
| Molecular Weight | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMWC MW (kDa) | 1.3 | 13 | 18 | ||||||||
| Depolymerization time (h) | 24 | 3.2 | 2.0 | ||||||||
| Experimental MW (kDa) | 1.25 | 12.75 | 18.20 | ||||||||
| Degree of Deacetylation (DDA) | |||||||||||
| DDA % | 55 | 80 | 100 | ||||||||
| Molar ratio of chitosan:Ac2O | 1:0.60 | 1:0.15 | 1:0 | ||||||||
| LMWC MW (kDa) | 1.3 | 13 | 18 | 1.3 | 13 | 18 | 1.3 | 13 | 18 | ||
| Experimental DDA% | |||||||||||
| By UV/visible | 54.9 | 54.8 | 55.1 | 79.8 | 80.3 | 80.2 | 99.6 | 99.4 | 100.3 | ||
| By 1H-NMR | 55.0 | 55.4 | 56.6 | 79.6 | 79.1 | 80.6 | 100.0 | 100.0 | 100.0 | ||