POLYMERIC SURFACE MODIFICATIONS BY NONCONVENTIONAL METHODS

Autor/autori: TEODORA TESLARU1CRENGUTA BACAOANU


Abstract: Polymer materials are widely used in various industrial and medical applications and each application requires specific properties. In order to improve wettability properties and remove contaminants from contact lens are used various chemical and physical methods based on incorporation of surfactants, UV radiations, ion beams and plasma treatments. The poly(methylmethacrylate) (PMMA) films are used in various biological applications, especially in ophthalmology, due to their particular physico-chemical and biological properties. In this work we present a comparative study on surface modifications of PMMA film induced by UV radiations and plasma treatment. The plasma is generated in a dielectric barrier discharge with asymmetrical electrode configuration, working at atmospheric pressure in argon with a flow rate of 3 L/min. The investigations of PMMA films before and after UV exposure and plasma treatment were performed by water contact angle measurements and atomic force microscopy.

Keywords: UV radiations, plasma treatment, PMMA films, wettability

 

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