The study was aimed at producing plasma polymerized acrylic acid (PPAA) functional coating for biomedical applications. Dielectric barrier discharge (DBD) was used to deposit functional films from acrylic acid vapors. The films were characterized by water contact angle

Fourier-transform infrared spectroscopy (FT-IR)

X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). By in vitro cell culture and rich blood platelet adhesion tests

effects of the film structure and chemical components on biocompatibilities of the films were studied. The results show that plasma parameters of pulse frequency

plasma power

discharge mode

gas pressure

and duty cycle

have great influence on PPAA coatings

and efficient cell adhesion of the PPAA coatings surface was demonstrated. Biological effects of the functional coatings were discussed in detail.