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Study of plasma polymer structures to induce composite layers♣

T. HIKOV1,* , L. PRAMATAROVA1, E. RADEVA1, L. VANZETTI2, E. IACOB2, R. DIMITROVA3, E. PECHEVA1, S. STAVREV4, D. FINGAROVA1,*

Affiliation

  1. Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
  2. Materials and Microsystems, Fondazione Bruno Kessler, 38100 Povo-Trento, Italy
  3. Institute of Organic Chemistry with Centre of Phytochemistry, 1113 Sofia, Bulgaria
  4. Space Research Institute, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria

Abstract

This study is designed to investigate the ability of plasma polymer films (PPHMDS), grown from the hexamethyldisiloxane (HMDS) monomer on stainless steel (SS) and silica glass (SG) substrates, to induce the deposition of composite layers from a mixture of saturated simulated body fluid (SBF) and detonation nanodiamond (DND) by a biomimetic process. Results from FTIR and XPS studies showed that the structure of the PPHDMS layers depends on the nature of the substrate, as well as on the deposition conditions and the influence of the subsequent deposition of the composite layers. The PPHDMS structure appears to be covalently bonded to SG, compared to those on SS. After their immersion in the mixture of SBF and DND, the layers grown on the SG_PPHDMS structure shows the existence of phosphate and carbonate groups. On the SS_PPHMDS, it shows a predominantly carbon enrich deposit, which indicates that the lack of functional polar groups of the SS_PPHMDS surfaces, and limits the process of precipitation of the SBF ions. The results emphasize the potential for tailoring a plasma polymer structure PPHMDS, by varying the deposition conditions and substrate, in order to use them as biocompatible materials..

Keywords

Advanced materials, Composite coatings, Metals, Mechanical properties.

Submitted at: Nov. 5, 2008
Accepted at: Sept. 9, 2009

Citation

T. HIKOV, L. PRAMATAROVA, E. RADEVA, L. VANZETTI, E. IACOB, R. DIMITROVA, E. PECHEVA, S. STAVREV, D. FINGAROVA, Study of plasma polymer structures to induce composite layers♣, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 9, pp. 1327-1330 (2009)