Carbon Nanolayers Depozited on Laser Treated PLLA Film
a Institute of Solid State Engineering, University of Chemistry and Technology, Prague, b Faculty of Science, Materials Centre of Ústí, J. E. Purkyně University, Ústí nad Labem
Keywords: polymer, evaporation, carbon nanolayers, thermal stress, surface properties
The deposition of C nanolayers decreases the contact angle significantly. Also, it slightly increases the surface roughness, morphology does not change significantly. Furthermore, it was found that heat treatment of deposited layers induces a significant change in surface morphology and roughness of PLLA and formation of lamellar structure. The parameters of lamellar structure are strongly dependent on the deposition distance of C. The deposited C layer increases surface electric conductivity dramatically. The combination of laser modification of PLLA surface, deposition of thin C film and subsequent heating brings about significant changes of surface properties of the studied polymers that are attractive for tissue engi¬neering.
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