Table 2.
The pH dependence of water solubility of CS and QCS.
| Materials | Transmittance (%) | |
|---|---|---|
| pH = 6.0 | pH = 7.0 | |
| CS | 99.0 | 71.9 |
| QCS-30 | 97.2 | 89.0 |
| QCS-40 | 96.5 | 92.6 |
| QCS-50 | 98.6 | 97.3 |
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