Impedance Spectroscopy Study of Composite Thin Films of Hydrated Polyethylene Glycol

A polyethylene glycol (PEG) polymer was synthesized using a dip-coating procedure on 316L stainless-steel (SS) substrate precoated with a primer that consisted of radio-frequency inductively coupled plasma-polymerized di (ethylene glycol) vinyl ether (EO2V). The primer and PEG composite film was stu...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2007-10, Vol.35 (5), p.1518-1526
Main Authors: Al Hamarneh, I.F., Pedrow, P.D., Goheen, S.C., Hartenstine, M.J.
Format: Article
Language:English
Subjects:
Adhesion
Austenitic stainless steels
Capacitance
Decay
Dip coating
Dip coatings
Discharges for spectral sources (including inductively coupled plasmas)
Electric discharges
Electrochemical impedance spectroscopy
Exact sciences and technology
Heat resistant steels
hydration
Impedance spectroscopy
impedance spectroscopy (IS)
Mathematical models
Optical films
Optical microscopes
Optical microscopy
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
plasma polymerization
Polyethylene
Polyethylene glycol
polyethylene glycol (PEG)
Polymer films
Radio frequency plasma
Scanning electron microscopy
Substrates
Thin films
Transistors
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Description
Summary:A polyethylene glycol (PEG) polymer was synthesized using a dip-coating procedure on 316L stainless-steel (SS) substrate precoated with a primer that consisted of radio-frequency inductively coupled plasma-polymerized di (ethylene glycol) vinyl ether (EO2V). The primer and PEG composite film was studied with profilometer, optical microscope, scanning electron microscope (SEM), and a tape test to evaluate thickness, coverage, morphology, and adhesion, respectively. Response of the PEG composite film to an applied ac voltage was studied as a function of hydration state using impedance spectroscopy (IS). A resistor/capacitor network was used to interpret the impedance spectra. Electrical capacitance of the PEG film decreased with an exponentially decaying term as dehydration progressed. PEG-film capacitance decay was consistent with a model describing water molecules diffusing through the PEG film.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2007.906136