Table 1 The effects of chitosan gelation media, solution concentration, pH on the maintenance of 3D printed structure (gelation process carried out at room temperature).
From: Study of 3D-printed chitosan scaffold features after different post-printing gelation processes
Gelation media | Concentration | pH | Maintenance of 3D structure | Neutralization time (sec) |
|---|---|---|---|---|
KOH | 1,5 M | 14 | ✓ | 30 |
1 M | 14 | ✓ | 50 | |
0,5 M | 13.70 | ✓ | 60 | |
0,1 M | 13.13 | ✗ | 300 | |
Na2CO3 | 1,5 M | 11.94 | ✓ | 40 |
1 M | 11.74 | ✓ | 50 | |
Na2CO3+NaHCO3 | 0.5 M 0.5 M | 9.72 | ✗ | 90 |
Na2CO3+NaHCO3 | 0.01 M 0.09 M | 9.22 | ✗ | n.d.* |
Na2CO3+NaHCO3 | 0.05 M 0.05 M | 10.05 | ✗ | 240 |
Na2HPO4 K2HPO4 | 0.1 M 0.005 M | 8.08 | ✗ | n.d.* |
Na2HPO4+Citric acid | 0.1 M 0.05 M | 7.6 | ✗ | n.d.* |
Ammonia vapour from 28% aqueous solution | 13 | ✓ | 18 |
