Adhesion of copper to poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP) surfaces modified by vacuum UV photo-oxidation downstream from Ar microwave plasma

2004 ◽  
Vol 18 (12) ◽  
pp. 1465-1481 ◽  
Author(s):  
W. Dasilva ◽  
A. Entenberg ◽  
B. Kahn ◽  
T. Debies ◽  
G.A. Takacs
Keyword(s):  
Microwave Plasma ◽  
Photo Oxidation ◽  
Vacuum Uv

Adhesion of Copper to Teflon ® poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) (PFA) Surfaces Modified by Vacuum UV Photo-oxidation Downstream from Argon Microwave Plasma

2004 ◽  
Vol 851 ◽  
Author(s):  
W. Dasilva ◽  
A. Entenberg ◽  
B. Kahn ◽  
T. Debies ◽  
G. A. Takacs
Keyword(s):  
Vinyl Ether ◽  
Microwave Plasma ◽  
Chain Scission ◽  
Cohesive Failure ◽  
Short Treatment ◽  
Water Contact ◽  
Photo Oxidation ◽  
Sputter Deposited ◽  
Plasma Factors ◽  
Vacuum Uv

ABSTRACTGood practical adhesion of sputter-deposited Cu is achieved to poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) (PFA) surfaces at short treatment times of vacuum UV (VUV) photo-oxidation downstream from Ar microwave (MW) plasma. Factors contributing to the adhesion include: (1) an improvement in wettability as observed by water contact angle measurements; (2) surface roughening; (3) defluorination of the surface; (4) cross-linking at the surface and (5) incorporation of oxygen as CF-O-CF2, CF2-O-CF2 and CF-O-CnF2n+1 moieties. With long treatment times, a cohesive failure occurred within the modified PFA and not at the Cu-PFA interface due to extensive chain scission weakening its mechanical properties.

Vacuum UV photo-oxidation of poly(ethylene terephthalate)

2017 ◽  
Vol 31 (23) ◽  
pp. 2542-2554 ◽  
Author(s):  
Andrew Morgan ◽  
Matthew Cocca ◽  
Katerine Vega ◽  
Andrew Fleischer ◽  
Surendra K. Gupta ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Photo Oxidation ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Vacuum Uv

Surface Characterization of Poly(acrylic acid) Grafted to Photo-oxidized Perfluorosulfonic Acid Membrane Used in Fuel Cells

2010 ◽  
Vol 1269 ◽  
Author(s):  
Alla Bailey ◽  
Fei Lu ◽  
Ameya Khot ◽  
Shahida Hussain ◽  
Kyle W. Rugg ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Photoelectron Spectroscopy ◽  
Surface Characterization ◽  
Microwave Plasma ◽  
Perfluorosulfonic Acid ◽  
Photo Oxidation ◽  
Modified Surface ◽  
Surface Modified ◽  
Poly Acrylic Acid

AbstractPerfluorosulfonic acid membrane (Nafion®-117) was first surface modified with atmospheric pressure UV photo-oxidation or low-pressure vacuum UV photo-oxidation downstream from an Ar microwave plasma, and then graft polymerized with acrylic acid. X-ray photoelectron spectroscopy (XPS) was used to analyze the modified Nafion surface and poly(acrylic acid) grafted to the modified surface.

Vacuum UV photo-oxidation of polystyrene

2016 ◽  
Vol 30 (20) ◽  
pp. 2212-2223 ◽  
Author(s):  
Xinyun Li ◽  
Marc Toro ◽  
Fei Lu ◽  
Jung On ◽  
Alla Bailey ◽  
...  
Keyword(s):  
Photo Oxidation ◽  
Vacuum Uv

Photo-oxidation of Single-walled Carbon Nanotubes

2005 ◽  
Vol 887 ◽  
Author(s):  
B Parekh ◽  
Thomas Debies ◽  
Chris Evans ◽  
Brian Landi ◽  
Ryne Raffaelle ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Photoelectron Spectroscopy ◽  
High Pressures ◽  
Microwave Plasma ◽  
Atmospheric Oxygen ◽  
Low Oxygen ◽  
Photo Oxidation ◽  
Single Walled Carbon ◽  
Oxygenated Functional Groups ◽  
Walled Carbon Nanotubes

ABSTRACTUV- and vacuum UV-assisted photo-oxidation of single-walled carbon nanotube (SWNT) paper occurred with: (1) atmospheric oxygen pressure using low-pressure Hg lamps (λ = 253.7 and 184.9 nm), (2) low oxygen pressure employing emission downstream from an Ar microwave plasma (λ = 106.7 and 104.8 nm), and (3) high pressures of He in a rotating d.c. arc that was designed to produce a spectral continuum from He excimers (λ = 58 - 110 nm). The photo-oxidized materials were characterized by x-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and Raman spectroscopy. UV photo-oxidation was demonstrated to be a controlled dry procedure for introducing oxygenated functional groups (C-O-C, C=O, O-C=O and O=C-O-C=O) on SWNTs.

Photo-oxidation of Multiwalled Carbon Nanotubes

2005 ◽  
Vol 887 ◽  
Author(s):  
B. Parekh ◽  
Thomas Debies ◽  
Pam Knight ◽  
K. S. V. Santhanam ◽  
Gerald A. Takacs
Keyword(s):  
Oxygen Concentration ◽  
Photoelectron Spectroscopy ◽  
Functional Group ◽  
Uv Treatment ◽  
Microwave Plasmas ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Photo Oxidation ◽  
Vacuum Uv ◽  
Surface Curve

ABSTRACTMWNTs were photo-oxidized in quartz boats using low-pressure Hg lamps and emission downstream from Ar microwave plasmas which are primarily atomic line sources of 253.7 and 184.9 nm UV, and 106.7 and 104.8 nm vacuum UV (VUV) radiation, respectively. X-ray photoelectron spectroscopy (XPS) showed rapid oxidation during the first hour of UV treatment and then an increase that was directly proportional to the time of treatment up to 4 h where the oxygen concentration was 7.5 at%. VUV photo-oxidation resulted in an oxygen concentration up to 9.5 at% with exposure time for the initial 2 h of treatment. Beyond 2 h, the oxygen concentration decreased with VUV exposure due to a larger rate of de-oxidation than oxidation at the surface. Curve fitting of the XPS C1s spectra revealed mainly the C-O-C functional group with the presence of C=O, O-C=O and O=C-O-C=O moieties. SEM micrographs showed no apparent effect on the structure or appearance of the MWNTs as expected for surface modification.

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