Table 2 Dependence of water contact angle (WCA, measured by goniometry) and concentrations of carbon, oxygen, and gold (by XPS) on PEEK modification: Ar plasma-treated (8.3 W, 60 and 240 s) and Au-sputtered (30, 150, and 300 s). The error of XPS measurement was ±5%
From: Tuning Surface Chemistry of Polyetheretherketone by Gold Coating and Plasma Treatment
Sample | WCA [°] | Element concentration [at.%] | ||
|---|---|---|---|---|
C (1s) | O (1s) | Au (4f) | ||
PEEK | 79.5 ± 2.4 | 88.8 | 11.2 | – |
PEEK/60 s | 94.0 ± 5.5 | 73.2 | 26.8 | – |
PEEK/60 s/30 s Au | 85.3 ± 1.2 | 43.0 | 6.6 | 50.4 |
PEEK/60 s/150 s Au | 85.0 ± 2.5 | 39.6 | 5.3 | 55.1 |
PEEK/60 s/300 s Au | 83.2 ± 1.7 | 35.2 | 5.3 | 59.5 |
PEEK/240 s | 95.6 ± 2.1 | 60.1 | 39.9 | – |
PEEK/240 s/30 s Au | 86.0 ± 4.1 | 43.8 | 5.1 | 51.1 |
PEEK/240 s/150 s Au | 82.4 ± 6.0 | 43.7 | 2.9 | 53.4 |
PEEK/240 s/300 s Au | 79.8 ± 7.6 | 40.4 | 4.8 | 54.8 |