Table 2.
Chemical and physical properties of PEEK samples.
| aSamples | Atomic composition/At.% | bCA/° | cRa/μm | ||
|---|---|---|---|---|---|
| C1s | O1s | P2p | |||
| S-NT | 87.5 ± 0.1 | 12.5 ± 0.1 | — | 104.1 ± 3.9 | <0.1 |
| S-PT | 85.9 ± 1.0 | 13.7 ± 1.0 | 0.4 ± 0.1 | 96.6 ± 7.8 | <0.1 |
| R-NT | 84.5 ± 0.9 | 15.5 ± 0.9 | — | 102.0 ± 5.9 | 2.1 ± 0.2 |
| R-PT | 83.1 ± 1.0 | 16.2 ± 0.9 | 0.7 ± 0.1 | 106.1 ± 13.9 | 2.1 ± 0.2 |
aS-NT: untreated PEEK, S-PT: phosphorylated PEEK with smooth surface, R-NT: sandblasted PEEK, R-PT: phosphorylated PEEK with sandblasted surface
bStatic contact angle of water droplet.
cMean roughness. The lower detection limit of the machine is 0.1 μm.