Formation of multi‐layered inorganic film on polycarbonate surface modified by an atmospheric plasma discharge

Abstract

Surface modification of polymers has been widely studied because of the industrial interest in several applications involving adhesion, packaging and metallization, among others. Plasma treatment, particularly atmospheric pressure plasma, is one of the most versatile techniques in surface modification. In this work, atmospheric pressure plasma treatment was performed to modify a polycarbonate surface. The effects of the treatment were sensitive to both the plasma ambient and the time elapsed after treatment. Surface treatment with a dielectric barrier discharge plasma torch produced an increase in the wettability of polycarbonate through the creation of C-OH polar groups on its surface, together with surface roughness. These effects were more pronounced by the addition of oxygen in an Ar gas mixture and the surface treatment time. In general, the atmospheric plasma torch treatment helped to enhance the wettability of the aqueous solutions to form a multi-layered inorganic film on the polycarbonate.

Investigación de la influencia del tipo de gas utilizado en el plasma atmosférico, en la modificación superficial del polipropileno

“…(J. X. , S. Guimond and M. R. Wertheimer 2004, C. S. Wong et al 2009, D. S. Won et al 2010 Esta disminución de la componente polar se produce prácticamente por igual en las muestras tratadas con aire como en las muestras tratadas con atmósfera de nitrógeno (Figura 143). Para las muestras tratadas con atmósfera de aire tenemos un valor inicial de la componente polar (γs p ) de 23,2 mJ/m 2 y un valor tras el envejecimiento de 9,13 mJ/m 2 , lo que supone una disminución de la componente polar (γs p ) del 60%.…”