Research Article
Synthesis of Silicon-Containing Chitosan Hydrogels in a Glycolic Acid Medium
Table 1
Characterization of the hybrid silicon-chitosan-containing hydrogels.
| Number | Component of the hydrogel, wt.% | CS/Si ratio | Physicochemical parameter | Gelation time, days | CS | Si | NaCl | | pH | 4°C | 20°C | 37°C |
| 1 | 2.0 | 2.43 | — | 0.82 | 1.4051 | 2.15 | 5.15 | 4.12 | 2.08 | 2 | | — | 1.3996 | 3.85 | 4.10 | 0.22 | 0.09 | 3 | | 1.0 | 1.4040 | 4.31 | 1.22 | 0.13 | 0.03 | 4 | | — | 0.41 | 1.3924 | 5.39 | 0.68 | 0.03 | 0.01 |
| 5 | 2.67 | 1.62 | — | 1.65 | 1.3854 | 2.13 | 6.88 | 5.95 | 2.13 | 6 | | — | 1.3821 | 3.81 | 5.33 | 0.40 | 0.16 | 7 | | 1.0 | 1.3870 | 4.22 | 2.41 | 0.14 | 0.05 | 8 | | — | 0.82 | 1.3753 | 5.34 | 0.69 | 0.03 | 0.02 |
| 9 | 3.0 | 1.21 | — | 2.48 | 1.3725 | 2.09 | 14.0 | 10.7 | 3.31 | 10 | | — | 1.3699 | 3.79 | 9.45 | 0.75 | 0.28 | 11 | | 1.0 | 1.3655 | 4.25 | 2.98 | 0.32 | 0.15 | 12 | | — | 1.24 | 1.3733 | 5.33 | 0.71 | 0.04 | 0.02 |
| 13 | 3.2 | 0.97 | — | 3.29 | 1.3740 | 2.09 | 17.6 | 12.0 | 3.88 | 14 | | — | 1.3636 | 3.78 | 10.0 | 1.35 | 0.47 | 15 | | 1.0 | 1.3639 | 4.22 | 3.30 | 0.36 | 0.23 | 16 | | — | 1.65 | 1.3646 | 5.33 | 0.75 | 0.04 | 0.03 |
| 17 | 3.56 | 0.61 | — | 5.74 | 1.3568 | 2.04 | 31.6 | 18.8 | 11.1 | 18 | | — | 1.3540 | 3.78 | 17.3 | 3.52 | 1.02 | 19 | | 1.0 | 1.3576 | 4.21 | 6.63 | 0.76 | 0.62 | 20 | | — | 2.87 | 1.3544 | 5.31 | 0.81 | 0.10 | 0.04 |
| 21 | | 0.48 | — | 7.50 | 1.3509 | 3.77 | 21.9 | 5.03 | 2.52 | 22 | | 1.0 | 1.3533 | 4.21 | 9.02 | 1.00 | 0.92 | 23 | | — | 3.75 | 1.3502 | 5.28 | 0.88 | 0.22 | 0.12 |
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of the system was varied by adding NaOH.
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