Surface Dynamics vs. Adhesion in Oxygen Plasma Treated Polyolefins

Abstract

Polyethylene (PE) and polypropylene (PP) were oxygen plasma treated and aged in carefully reproducible conditions. The effect of aging on the surface chemistry, wettability and adhesion were studied using a combination of techniques: contact angle measurements, XPS, SSIMS, adhesion tests (shear and pull).PE was found to be relatively insensitive to aging both in terms of wettability and adhesion, due to crosslinking during plasma treatment, which is likely to reduce macromolecular mobility within the surface layer.In the case. of PP, dramatic decreases of wettability occur with time, due to macromolecular motions leading to minimization of oxygen-containing functions at the surface. This behavior was shown to affect the adhesion performance of treated PP.

Non-thermal plasma assisted lithography for biomedical applications: an overview

“…During storage, the polymer will try to lower the introduced surface energy by reorienting its plasma treated polymer chains into the bulk of the surface. This dynamic process has been extensively studied and by applying the right storage conditions (low temperatures/ vacuum environment) the plasma treatment effect can be preserved for a relatively longer time [44][45][46][47][48][49].…”

Effect of Plasma Treatment on Uncured Rubber Surfaces

“…The plasma treatment induces the transformations of functional groups on the rubber surface by XPS analysis and this chemical change has an influence on the cured rubber properties. KEY WORDS Plasma Treatment / Rubber / Surface Treatment / Crosslinking Density / Functionalization / (Received August 29, 2007: Accepted December 3,2007) [ Kobunshi Ronbunshu, 65, 301-308 (2008)] 2008, The Society of Polymer Science, Japan…”

Miniaturized Cold Atmospheric Plasma for the Conservation of Plastics in Modern and Contemporary Art

“…[1][2][3][4][5] As aresult of chemical surface modification plasma treatments can improve wettability,c oatability and bondability of non-polar plastics. [6][7][8] The aim of the ongoing research project presented here is to develop aplasma source tailored to art conservation-restoration applications, designed to meet the following demands: i) The source is operable without vacuum at atmospheric pressure.…”