Home > Press > Plasma Treatment, of PTFE
Treated PTFE Sample |
Abstract:
PTFE is a chemically inert and highly hydrophobic fluoropolymer due to the high electronegativity of fluorine. It is not readily modified by standard plasma processes but the may be altered to render the surface hydrophilic by the use of hydrogen plasma. The action of atomic hydrogen, generated by the plasma, is to react with surface fluorine and remove this into the gas phase where it is pumped away by the vacuum system. Hydrogen then terminates the free surface bonds to produce a CHx polymer surface which is readily wettable. The resulting surface is also ‘etched' on a microscopic scale which produces a microscopically structured surface. Both actions in combination result in a modified surface which may be glued, painted etc.
Plasma Process
When gas atoms are ionised, the collision of high energy particles knocks electrons out of their orbits. This results in the characteristic "glow" or light associated with plasma. Plasmas many different species including atoms, molecules, ions, electrons, free radicals, metastables, and photons in the short wave ultraviolet (vacuum UV or VUV) range. Plasmas are generated in closed vessels at low pressures, typically < 1.0 Torr. The low pressure results in a long mean free path of the plasma species, so that they remain reactive until contact with a surface. The overall chamber temperature at the commonly used power levels and pressures is close to room temperature.
Results
The altered surface morphology and results of surface energy test fluid measurements (72mN/m) are shown in images.
"Treatment of PTFE with low pressure hydrogen plasma is a very effective method of rendering the surface wettable without using harsh chemicals."
####
For more information, please click here
Contacts:
Unit B3, Trident Business Park Daten Avenue
Warrington
Cheshire WA3 6AX
Tel: +44 (0) 1925 830 771
Fax: +44 (0) 1925 800 035
Email:
Copyright © Henniker
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Related News Press |
News and information
Researchers develop artificial building blocks of life March 8th, 2024
Announcements
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Tools
Ferroelectrically modulate the Fermi level of graphene oxide to enhance SERS response November 3rd, 2023
The USTC realizes In situ electron paramagnetic resonance spectroscopy using single nanodiamond sensors November 3rd, 2023
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||