Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/14700

TitlePlasma surface activation and TiN coating of a TPV substrate for biomedical applications
Author(s)Lima, Patricia
Fonseca, Carlos
Vaz, F.
Machado, A. V.
Pedrosa, P.
KeywordsCoatings
ECG
EEG
Electrodes
Thermoplastic
TiN
TPV
Issue date2011
PublisherWiley
JournalPlasma Processes and Polymers
Abstract(s)A thermoplastic vulcanizate (TPV) substrate was coated with a thin conductive film of titanium nitride (TiN), by dc reactive sputtering, aiming to develop polymer-based electrodes for bio-signal acquisition, namely for electroencephalographic (EEG) and electrocardiographic (ECG) applications. After the preparation process, TPVs were characterized in terms of their mechanical and surface properties. A detailed experimental protocol was followed in order to improve the adhesion of the film, consisting of a three-stage plasma treatment in an argon atmosphere. The electrochemical properties of the coated samples were studied in synthetic sweat solutions by open circuit potential (OCP) measurements and electrochemical impedance spectroscopy (EIS). The results showed that the surface plasma treated TPV with a 60% EPDM and 40% PP composition coated with a nanometric TiN film exhibited good mechanical properties and electrochemical behavior, according to the main requirements of an electrode to be used in common EEG and ECG exams.
TypeArticle
DescriptionEm publicação
URIhttp://hdl.handle.net/1822/14700
DOI10.1002/ppap.201100073
ISSN1612-8850
Publisher versionwww.wileyonlinelibrary.com
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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