Table 1.
Position and percent area of fitted peaks in high resolution XPS spectra
| Core Level Electrons | Peak Number | Bonding Environment | Binding Energy (eV) | Area (atomic %) |
|---|---|---|---|---|
| PDMS ventricular catheter | ||||
|
| ||||
| C1s | – | Carbon impurities | 284.2 | 32.7 |
| 1 | C*–Si | 284.7 | 31.5 | |
|
| ||||
| O1s | – | Oxygen impurities | 531.6 | 5.8 |
| 2 | Si–O* | 532.0 | 14.9 | |
|
| ||||
| Si2p | – | Si2p3/2 | 101.6 | 10.1 |
| – | Si2p1/2 | 102.3 | 5.0 | |
|
| ||||
| PHEMA-coated catheter | ||||
|
| ||||
| C1s | – | Carbon impurities | 284.2 | 4.1 |
| 3 | –C*H2–C(C*H3)– | 285.1 | 21.3 | |
| 4 | –CH2–C*(CH3)– | 285.7 | 11.0 | |
| 5 | O–C–C*–OH | 286.5 | 10.8 | |
| 6 | O–C*–C–OH | 287.0 | 10.8 | |
| 7 | O–C*=O | 289.1 | 10.5 | |
|
| ||||
| O1s | 8 | O–C=O* | 532.5 | 10.5 |
| 9 | O–C–C–O*H | 533.2 | 10.5 | |
| 10 | O*–C–C–OH | 533.9 | 10.5 | |