Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C:H:Finterlayer

Hironari Umemoto, Terumitsu Hasebe, Rumiko Kasai, Yukihiro Yoshimoto, So Nagashima, Atsushi Hotta, Tetsuya Suzuki

研究成果: Conference contribution


Amorphous carbon (a-C) films have a growing interest in the biological and medical field, as a coating material, due to their biocompatibility and antibacterial property. However, a-C films deposited directly on polymers often show adhesion failure. In this paper, two types of a-C films, amorphous hydrogenated carbon (a-C:H) film and hydrogen-free a-C (H-free a-C) film were deposited on polytetrafluoroethylene (PTFE) using a plasma deposition method. Prior to a-C film coating, the PTFE substrates were treated with Ar and O 2 plasma and an appropriate interlayer was chosen to enhance the adhesion strength. The effect of the plasma pretreatment on the chemical composition of the PTFE was investigated by X-ray photoelectron spectroscopy (XPS). A T-peel test was carried out to evaluate the adhesion strength of the a-C coated PTFE. In the T-peel test, Ar plasma pretreatment improved the adhesion strength more effectively than that of O2 plasma pretreatment, because of the substantial defluorination and oxygen bonding occurred by Ar plasma pretreatment. Moreover, H-free a-C film reduced the numbers of Escherichia coli (E. coli) colonies dramatically, compared with original PTFE and a-C:H coated PTFE. Consequently, H-free a-C film coating can be a promising method to inhibit the increase of bacteria.

ホスト出版物のタイトルCarbon Nanomaterials
出版社Materials Research Society
出版ステータスPublished - 2013
イベント2012 MRS Fall Meeting - Boston, MA, United States
継続期間: 2012 11月 252012 11月 30


名前Materials Research Society Symposium Proceedings


Other2012 MRS Fall Meeting
国/地域United States
CityBoston, MA

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学


「Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C:H:Finterlayer」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。