Abstract
A two-step procedure for a permanently hydrophilic surface modification of poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP, fluorinated ethylene propylene) was studied. In the first step a cationic polymer surface was created by low-pressure ammonia plasma treatment introducing nitrogen-containing functional groups. Afterwards, the anionic poly(sodium 4-styrenesulfonate) was adsorbed onto the plasma-treated FEP surface. The adsorption was assumed to be controlled by ionic interactions. The modification effects and their long-term behavior were evaluated by means of water contact angle goniometry. Furthermore, electrokinetic measurements and X-ray photoelectron spectroscopy were used for surface characterization.
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Lappan, U., Nitschke, M., Pleul, D. et al. Polyelectrolyte Adsorption on NH3-Plasma-Treated Poly(tetrafluoroethylene-co-hexafluoropropylene). Plasmas and Polymers 6, 211–220 (2001). https://doi.org/10.1023/A:1014409915256
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DOI: https://doi.org/10.1023/A:1014409915256