Layer-by-layer assembly of thin organic films on PTFE activated by cold atmospheric plasma

TitleLayer-by-layer assembly of thin organic films on PTFE activated by cold atmospheric plasma
Publication TypeJournal Article
Year of Publication2015
AuthorsToth, A, Szentmihalyi, K, Keresztes, Z, Szigyártó, ICs., Kovacik, D, Cernak, M, Kutasi, K
JournalOPEN CHEMISTRY
Volume13
Pagination557-563
Date PublishedJAN
Type of ArticleArticle
ISSN2391-5420
KeywordsAFM, ATR-FTIR, DCSBD plasma, Polytetrafluoroethylene surface, Polyvinylpyrrolidone and tannic acid layers, XPS
Abstract

{An air diffuse coplanar surface barrier discharge is used to activate the surface of polytetrafluoroethylene (PTFE) samples, which are subsequently coated with polyvinylpyrrolidone (PVP) and tannic acid (TAN) single, bi- and multilayers, respectively, using the dip-coating method. The surfaces are characterized by X-ray Photoelectron Spectroscopy (XPS), Attenuated Total Reflection - Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Atomic Force Microscopy (AFM). The XPS measurements show that with plasma treatment the F/C atomic ratio in the PTFE surface decreases, due to the diminution of the concentration of CF2 moieties, and also oxygen incorporation through formation of new C-O

DOI10.1515/chem-2015-0072