English, Article edition: ELECTROLESS PLATING OF COPPER ON POLYTETRAFLUOROETHYLENE FILMS MODIFIED BY SURFACE-INITIATED FREE RADICAL POLYMERIZATION OF 4-VINYLPYRIDINE YIWANG CHEN; WEI SUN; QILAN DENG; ...

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Bookmark: http://trove.nla.gov.au/version/84752
Physical Description
  • article
Language
  • English

Edition details

Title
  • ELECTROLESS PLATING OF COPPER ON POLYTETRAFLUOROETHYLENE FILMS MODIFIED BY SURFACE-INITIATED FREE RADICAL POLYMERIZATION OF 4-VINYLPYRIDINE
Author
  • YIWANG CHEN
  • WEI SUN
  • QILAN DENG
  • LIE CHEN
  • XIAOHUI HE
Physical Description
  • article
Notes
  • Surface modification of polytetrafluoroethylene (PTFE) films is done by exposing the films to a sodium naphthalenide (Na/​naphtha) etchant, and esterification of 4,4'-azobis(4-cyanopentanoic acid) (ACP) with the hydroxyl groups covalently linked to the surface, followed by the surface-initiated free radical polymerization of 4-vinylpyridine (4 VP). The surface elemental composition and topography of the poly(4-vinylpyridine) (PVP) graft-functionalized PTFE surfaces (PTFE-g-PVP surfaces) were characterized by X-ray photoelectron spectroscopy (XPS), attenuated total reflectance (ATR) FTIR spectroscopy, and atomic force microscopy (AFM). Water contact angles on the pristine PTFE surface and PTFE-g-PVP surfaces were measured. The PVP brushes on the PTFE surface with well-preserved pyridine groups were used not only as the chemisorption sites for the palladium complexes (without the need for prior sensitization by SnCl2) during the electroless plating of copper, but also as an adhesion promotion layer to enhance the adhesion of the electrolessly deposited copper to the PTFE surfaces. The T-peel adhesion strength of the electrolessly deposited copper to the PVP grafted PTFE (PTFE-g-PVP) surface could reach about 7.2 N/​cm. This adhesion strength was much higher than that of the electrolessly deposited copper to the pristine or Na/​naphtha-treated PTFE surface. Effects of the graft polymerization time and the activation time in the PdCl2 solution on the T-peel adhesion strength of the electrolessly deposited copper (from the Sn-free process) to the PTFE-g-PVP surface were determined.
  • Polyterafluoroethylene, 4-vinylpyridine, adhesion, electroless plating
  • RePEc:wsi:srlxxx:v:14:y:2007:i:02:p:241-253
Language
  • English
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