Emission Spectra Analysis of Atmospheric Pressure DBD Plasma Being Processed by Polypropylene Non Woven Fabric

Abstract:

In this paper, the emission spectra of the atmospheric N₂ and N₂/CO₂ DBD plasma being processed by PP sample are analyzed. The results indicate the spectrum lines of oxygen atoms ion (O⁺) in the region of 382.1 nm - 389.3 nm and 412.1 nm - 421.3 nm are observed in N₂ plasma. However, the spectrum lines of O⁺ has absolutely disappeared, furthermore the γ spectrum band of NO in the region of 270nm-325nm has appeared in N₂/CO₂ plasma because the metastable nitrogen molecules () are quenched by CO₂ molecules. This causes that the collision of the metastable nitrogen molecules () and PP sample surface were reduced and ultimately leads to a reduction in the treatment effect of the N₂/CO₂ plasma on the surface of the PP sample. Therefore, this indicates the metastable nitrogen molecules () in the plasma region plays a key role in improving the characteristics of the PP surface.

• Periodical: Key Engineering Materials (Volume 748)
• Pages: 91-95
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.748.91
• Online since: August 2017
• Authors: Yan Zhang*, Qing Nan Xu, Yanwei Li, Ti Yang, Yan Zhou Sun
• Keywords: Dielectric Barrier Discharge, Emission Spectrum, Metastable Nitrogen Molecules

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