In‐depth diffusion of oxygen into LDPE exposed to an Ar–O2 atmospheric post‐discharge: a complementary approach between AR‐XPS and Tof‐SIMS techniques |
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Authors: | Sami Abou Rich Perrine Leroy Thierry Dufour Nimer Wehbe Laurent Houssiau François Reniers |
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Institution: | 1. Faculté des Sciences, Service de Chimie Analytique et de chimie des Interfaces, Université Libre de Bruxelles, , B‐1050 Bruxelles, Belgium;2. Centre de recherche en Physique de la Matière et du Rayonnement, University of Namur (FUNDP), , B‐5000 Namur, Belgium |
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Abstract: | The in‐depth oxygen diffusion into a low density polyethylene film is performed in the post‐discharge of an atmospheric plasma torch, supplied in argon as carrier gas and with or without oxygen as reactive gas. The chemical and structural properties of the polymer surface and bulk are studied in terms of plasma parameters (treatment time, power, and reactive gas flow rate). A good correlation between XPS and Fourier transform infrared spectroscopy analyses is demonstrated. The penetration depth of oxygen into the bulk of the polymer is investigated by angle resolved‐XPS and time‐of‐flight SIMS. It is shown that, depending on the plasma conditions, oxygen could penetrate up to 20–40 nm into the low density polyethylene during the atmospheric plasma treatment. Copyright © 2014 John Wiley & Sons, Ltd. |
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Keywords: | atmospheric torch plasma oxygen diffusion into polymer AR‐XPS Tof‐SIMS |
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