Abstract
Polyethylene terephthalate (PET) surfaces have been treated with NH3 plasma, and subsequently grafted with glutamic acid using glutaraldehyde as crosslinker. The extent of surface modification of the PET films was investigated by contact angle measurements, ATR-FTIR, XPS spectra and activated partial thromboplastin time (APTT) measurements. The properties of the films after treatment with NH3 alone were compared with those obtained after subsequent grafting with glutamic acid. It was found that the former are superior to the latter, and the blood compatibility was best when the power used was 70 W. The APTT times of the NH3-treated film and the grafted film were respectively 5.9 s and 3.2 s longer than that of the untreated film.
| Original language | English |
|---|---|
| Pages (from-to) | 290-292+325 |
| Journal | Beijing Huagong Daxue Xuebao (Ziran Kexueban)/Journal of Beijing University of Chemical Technology (Natural Science Edition) |
| Volume | 34 |
| Issue number | 3 |
| State | Published - May 2007 |
| Externally published | Yes |
Keywords
- Anticoagulant activity
- Glutamic acid
- PET film
- Plasma
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