The effect of polyterpenol thin film surfaces on bacterial viability and adhesion

Bazaka, Kateryna, Jacob, Mohan V., Truong, Vi Khanh, Crawford, Russell J., and Ivanova, Elena P. (2011) The effect of polyterpenol thin film surfaces on bacterial viability and adhesion. Polymers, 3 (1). pp. 388-404.

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The nanometer scale surface topography of a solid substrate is known to influence the extent of bacterial attachment and their subsequent proliferation to form biofilms. As an extension of our previous work on the development of a novel organic polymer coating for the prevention of growth of medically significant bacteria on three-dimensional solid surfaces, this study examines the effect of surface coating on the adhesion and proliferation tendencies of Staphylococcus aureus and compares to those previously investigated tendencies of Pseudomonas aeruginosa on similar coatings. Radio frequency plasma enhanced chemical vapor deposition was used to coat the surface of the substrate with thin film of terpinen-4-ol, a constituent of tea-tree oil known to inhibit the growth of a broad range of bacteria. The presence of the coating decreased the substrate surface roughness from approximately 2.1 nm to 0.4 nm. Similar to P. aeruginosa, S. aureus presented notably different patterns of attachment in response to the presence of the surface film, where the amount of attachment, extracellular polymeric substance production, and cell proliferation on the coated surface was found to be greatly reduced compared to that obtained on the unmodified surface. This work suggests that the antimicrobial and antifouling coating used in this study could be effectively integrated into medical and other clinically relevant devices to prevent bacterial growth and to minimize bacteria-associated adverse host responses.

Item ID: 16116
Item Type: Article (Research - C1)
ISSN: 2073-4360
Keywords: nanoarchitecture; plasma polymerization; terpinen-4-ol
Date Deposited: 14 Jun 2011 04:59
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091209 Polymers and Plastics @ 50%
09 ENGINEERING > 0912 Materials Engineering > 091205 Functional Materials @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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