Table 3. Contact Angles of Different Chitosan Cryogelsa.
crosslinker content (vol %) | test condition | 1 (°) | 2 (°) | 3 (°) | average ±standard deviation (°) |
---|---|---|---|---|---|
0.2 | WCA in air | 0 | 0 | 0 | 0 ± 0 |
OCA in air | 0 | 0 | 0 | 0 ± 0 | |
WCA underoil | 0 | 0 | 0 | 0 ± 0 | |
OCA underwater | 140.4 | 143.3 | 140.7 | 141.5 ± 1.3 | |
0.5 | WCA in air | 0 | 0 | 0 | 0 ± 0 |
OCA in air | 0 | 0 | 0 | 0 ± 0 | |
WCA underoil | 0 | 0 | 0 | 0 ± 0 | |
OCA underwater | 126.2 | 127.4 | 132.1 | 128.6 ± 2.5 |
Note: droplet volume 3.0 μL.