Treatment of PET and PU polymers by atmospheric pressure plasma generated in dielectric barrier discharge in air

SURFACE & COATINGS TECHNOLOGY

卷:204

Article; Proceedings Paper

Kostov, K. G.¹  dos Santos, A. L. R.¹  Honda, R. Y.¹  Nascente, P. A. P.²  Kayama, M. E.¹  Algatti, M. A.¹  Mota, R. P.¹ 

[1] State Univ Sao Paulo UNESP, FEG, BR-12516410 Guaratingueta, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil

关键词: Atmospheric plasma;    Dielectric barrier discharge;    Contact angle;    XPS;    Polymers;   

DOI  :  10.1016/j.surfcoat.2010.02.008

来源: Elsevier

【 摘 要 】

Plasma treatments are frequently employed to modify surface properties of materials such as adhesivity, hydrophobicity, oleophobicity etc. Present work deals with surface modification of common commercial polymers such as polyethylene terephthalate (PET) and polyurethane (PU) by an air dielectric barrier discharge (DBD) at atmospheric pressure. The DBD treatment was performed in a plain reactor in wire-duct geometry (non-uniform field reactor), which was driven by a 60 Hz power supply. Material characterization was carried out by water contact angle measurements, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The plasma-induced modifications are associated with incorporation of polar oxygen and nitrogen containing groups on the polymer surface. The AFM analysis reveals that the plasma treatment roughens the material surface. Due to these structural and morphological changes the surface of DBD-treated polymers becomes more hydrophilic resulting in enhanced adhesion properties. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

Free