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Surface modification of polymethylmetacrylate films using dielectric barrier discharge

G. BORCIA1, I. RUSU1,* , G. POPA1

Affiliation

  1. Plasma Physics Department, A.I. Cuza University, Iasi, Romania

Abstract

In this paper, continuing previous work, we report on the surface modification of a polymer, PMMA (polymethylmetacrylate), which already contains intrinsically structurally bonded oxygen in its structure prior to treatment, in an experimental DBD reactor run in an atmospheric pressure gaseous environment. Here the effects of He+N2 and He+O2-DBD treatment on the polymer surface are examined, discussed and compared to the He-DBD treatment. The surface analysis and characterization are performed using X-ray photoelectron spectroscopy (XPS), contact angle measurement and atomic force microscopy (AFM) before and following the DBD processing described. The discharge parameters used are correlated with the changes in the surface characteristics found following DBD treatments, in order to select the most convenient gas mixture for the efficient modification of the surface properties and the subsequent stabilization with time of the modified surfaces. The treated PMMA films exhibit improved surface characteristics and potentially better application performance, as demonstrated in relation with the surface morphology and roughness, the surface and interfacial energetic characteristics, and the chemical structure. The treatment is efficient and reproducible for short treatment times and the surface properties have high post-processing stability..

Keywords

Surface treatment, Dielectric barrier discharge, Polymethylmetacrylate, Morphology, Functionalization, Stability.

Submitted at: March 15, 2006
Accepted at: May 18, 2006

Citation

G. BORCIA, I. RUSU, G. POPA, Surface modification of polymethylmetacrylate films using dielectric barrier discharge, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1048-1052 (2006)