MISC

2004年10月

Surface characterization of plasma-modified poly(ethylene terephthalate) film surfaces

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
  • N Inagaki
  • ,
  • K Narushim
  • ,
  • N Tuchida
  • ,
  • K Miyazak

42
20
開始ページ
3727
終了ページ
3740
記述言語
英語
掲載種別
DOI
10.1002/polb.20234
出版者・発行元
JOHN WILEY & SONS INC

Poly(ethylene terephthalate) (PET) film surfaces were modified by argon (Ar), oxygen (O-2), hydrogen (H-2), nitrogen (N-2), and ammonia (NH3) plasmas, and the plasma-modified PET surfaces were investigated with scanning probe microscopy, contact-angle measurements, and X-ray photoelectron spectroscopy to characterize the surfaces. The exposure of the PET film surfaces to the plasmas led to the etching process on the surfaces and to changes in the topography of the surfaces. The etching rate and surface roughness were closely related to what kind of plasma was used and how high the radio frequency (RF) power was that was input into the plasmas. The etching rate was in the order of O-2 plasma > H-2 plasma > N-2 plasma > Ar plasma > NH3 plasma, and the surface roughness was in the order of NH3 plasma > N-2 plasma > H-2 plasma > Ar plasma > O-2 plasma. Heavy etching reactions did not always lead to large increases in the surface roughness. The plasmas also led to changes in the surface properties of the PET surfaces from hydrophobic to hydrophilic; and the contact angle of water on the surfaces decreased. Modification reactions occurring on the PET surfaces depended on what plasma had been used for the modification. The O-2, Ar, H-2, and N-2 plasmas modified mainly CH3 or phenyl rings rather than ester groups in the PET polymer chains to form C-O groups. On the other hand, the NH3 plasma modified ester groups to form C-O groups. Aging effects of the plasma-modified PET film surfaces continued as long as 15 days after the modification was finished. The aging effects were related to the movement of C=O groups in ester residues toward the topmost layer and to the movement of C-O groups away from the topmost layer. Such movement of the C=O groups could occur within at least 3 nm from the surface. (C) 2004 Wiley Periodicals, Inc.

Web of Science ® 被引用回数 : 142

リンク情報
DOI
https://doi.org/10.1002/polb.20234
CiNii Articles
http://ci.nii.ac.jp/naid/80016920642
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000224214400008&DestApp=WOS_CPL

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