Thin surface layer of plasma treated polyethylene

0340383 - ÚACH 2010 RIV US eng J - Journal Article
Kotál, V. - Stopka, Pavel - Sajdl, P. - Švorčík, V.
Thin surface layer of plasma treated polyethylene.
Strength of Materials. Roč. 40, č. 1 (2008), s. 86-89. ISSN 0039-2316. E-ISSN 1573-9325
R&D Projects: GA AV ČR(CZ) KAN400480701; GA MŠMT(CZ) LC06041
Institutional research plan: CEZ:AV0Z40320502
Keywords : argon plasma * high density polyethylene * goniometry * X-ray photoelectron spectroscopy
Subject RIV: CA - Inorganic Chemistry

This paper reports on the effect of argon plasma on the high density polyethylene surface. The aim is to alter the surface in a manner and scale resulting in a stronger metal/polymer valence. The specimens are exposed to the direct current discharge, the irradiation time and power being variables. Electron paramagnetic resonance and X-ray photoelectron spectroscopy (EPR and XPS, respectively) are employed to determine the plasma effect. The surface wettability is studied by goniometry. The plasma treatment leads to radical generation and activation of such agents as oxygen, thus the surface wettability is significantly increased. The evolution of the treated surface in different media is studied. The influence of an increased oxygen concentration and the storage medium on the concentration gradient within the surface monolayers is proved. The EPR data show a gradual and very slow decrease in the number of radicals present on the treated surface after 2000 h.
Permanent Link: http://hdl.handle.net/11104/0183636