Table 1 Surface chemical composition of bare and SBMA hydrogel-coated PU substrates
From: Sulfobetaine methacrylate hydrogel-coated anti-fouling surfaces for implantable biomedical devices
Sample | Atomic percentage (%) | Atomic ratio | |||
|---|---|---|---|---|---|
C1s | O1s | N1 s | S2p | N/S ratio | |
Bare PU | 85.64 | 13.25 | 1.11 | 0 | – |
Hydrogel-coated PU | 64.16 | 25.63 | 4.71 | 5.5 | 0.86 |