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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherMaterials Research Society
Pages193-198
Number of pages6
Volume1505
ISBN (Print)9781632660985
DOIs
Publication statusPublished - 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: 2012 Nov 252012 Nov 30

Other

Other2012 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period12/11/2512/11/30

Fingerprint

polytetrafluoroethylene
Amorphous carbon
Polytetrafluoroethylene
Polytetrafluoroethylenes
Hydrogen
Carbon films
Amorphous films
Plasmas
coatings
Coatings
carbon
hydrogen
pretreatment
Bond strength (materials)
adhesion
defluorination
Plasma deposition
Biocompatibility
biocompatibility
Escherichia

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Umemoto, H., Hasebe, T., Kasai, R., Yoshimoto, Y., Nagashima, S., Hotta, A., & Suzuki, T. (2013). Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C: H:Finterlayer. In Materials Research Society Symposium Proceedings (Vol. 1505, pp. 193-198). Materials Research Society. https://doi.org/10.1557/opl.2013.526

Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C : H:Finterlayer. / Umemoto, Hironari; Hasebe, Terumitsu; Kasai, Rumiko; Yoshimoto, Yukihiro; Nagashima, So; Hotta, Atsushi; Suzuki, Tetsuya.

Materials Research Society Symposium Proceedings. Vol. 1505 Materials Research Society, 2013. p. 193-198.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Umemoto, H, Hasebe, T, Kasai, R, Yoshimoto, Y, Nagashima, S, Hotta, A & Suzuki, T 2013, Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C: H:Finterlayer. in Materials Research Society Symposium Proceedings. vol. 1505, Materials Research Society, pp. 193-198, 2012 MRS Fall Meeting, Boston, MA, United States, 12/11/25. https://doi.org/10.1557/opl.2013.526
Umemoto H, Hasebe T, Kasai R, Yoshimoto Y, Nagashima S, Hotta A et al. Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C: H:Finterlayer. In Materials Research Society Symposium Proceedings. Vol. 1505. Materials Research Society. 2013. p. 193-198 https://doi.org/10.1557/opl.2013.526
Umemoto, Hironari ; Hasebe, Terumitsu ; Kasai, Rumiko ; Yoshimoto, Yukihiro ; Nagashima, So ; Hotta, Atsushi ; Suzuki, Tetsuya. / Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C : H:Finterlayer. Materials Research Society Symposium Proceedings. Vol. 1505 Materials Research Society, 2013. pp. 193-198
@inproceedings{3050f992aef94b1d8a6b1692937235c8,
title = "Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C: H:Finterlayer",
abstract = "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.",
author = "Hironari Umemoto and Terumitsu Hasebe and Rumiko Kasai and Yukihiro Yoshimoto and So Nagashima and Atsushi Hotta and Tetsuya Suzuki",
year = "2013",
doi = "10.1557/opl.2013.526",
language = "English",
isbn = "9781632660985",
volume = "1505",
pages = "193--198",
booktitle = "Materials Research Society Symposium Proceedings",
publisher = "Materials Research Society",

}

TY - GEN

T1 - Anti-bacterial property of hydrogen-free amorphous carbon coatings on Ar plasma-pretreated polytetrafluoroethylene (PTFE) with a-C

T2 - H:Finterlayer

AU - Umemoto, Hironari

AU - Hasebe, Terumitsu

AU - Kasai, Rumiko

AU - Yoshimoto, Yukihiro

AU - Nagashima, So

AU - Hotta, Atsushi

AU - Suzuki, Tetsuya

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84899852974&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899852974&partnerID=8YFLogxK

U2 - 10.1557/opl.2013.526

DO - 10.1557/opl.2013.526

M3 - Conference contribution

AN - SCOPUS:84899852974

SN - 9781632660985

VL - 1505

SP - 193

EP - 198

BT - Materials Research Society Symposium Proceedings

PB - Materials Research Society

ER -