Local Surface Modification of Polymer Material using Low-temperature Microplasma

• Noma Yuri

  Department of Advanced Materials Science, Graduate School of Frontier Sciences,The University of Tokyo

• Higashi Kaoru

  Institute of Industrial Science, The University of Tokyo

• Aizawa Hidenobu

  National Institute of Advanced Industrial Science and Technology (AIST)

• Kurosawa Shigeru

  National Institute of Advanced Industrial Science and Technology (AIST)

• Yatsuda Hiromi

  Japan Radio Co., Ltd., Laboratory

• Nara Makoto

  Japan Radio Co., Ltd., Laboratory

• Terashima Kazuo

  Department of Advanced Materials Science, Graduate School of Frontier Sciences,The University of Tokyo

Abstract

Low-temperature NH₃/He-microplasma under a high-pressure environment close to atmospheric pressure (720-730 Torr) has been employed for local surface modification of nitrogen groups on the surface of plasma-polymerized styrene (pp-styrene). As a result of optical emission spectroscopy (OES) measurement, the gas temperature of low-temperature NH₃/He-microplasma was T_g ≈ 290 K and proved the treatment to be less thermal damage for the polymer. Also, from the measurement of Lissajou figure, the estimated electron temperature and the mean electron density was T_e≈ 10⁵ K and N_e ≈ 10⁷ cm^-3, respectively. X-ray photoelectron spectroscopy (XPS) measurement results show that the nitrogen and oxygen groups were modified locally on the surface of pp-styrene film by the treatment of NH₃/He-low-temperature plasma. The diameter of modified nitrogen groups' area corresponds to that of the glass capillary (500μm) at the end of microplasma torch. Furthermore, the resonant frequency decline of the treated pp-styrene-coated surface transverse wave (STW) acoustic device suggested that NH₃/He-low-temperature plasma raised the water adsorption on the surface of pp-styrene film. In maximum, the water adsorption increased 2.63 times compared to untreated one.

Journal

• Journal of Photopolymer Science and Technology

  Journal of Photopolymer Science and Technology 20 (6), 785-792, 2007

  The Society of Photopolymer Science and Technology(SPST)

Keywords

• low-temperature microplasma
• ammonia
• plasma-polymerized styrene (pp-styrene) film
• localized treatment
• optical emission spectroscopy (OES)
• Lissajou method
• X-ray photoemission spectroscopy (XPS)
• surface transverse wave (STW) acoustic device

Details

• CRID: 1390282679301970688
• NII Article ID: 130004833189
• NII Book ID: AA11576862
• DOI: 10.2494/photopolymer.20.785
• COI: 1:CAS:528:DC%2BD1cXisVersg%3D%3D
• ISSN: 13496336
• ISSN: 09149244
• NDL BIB ID: 9307185
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9307185
• Web Site: http://www.jstage.jst.go.jp/article/photopolymer/20/6/20_6_785/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed