AI Article Synopsis

  • A new conical-shaped atmospheric pressure plasma jet (CS-APPJ) was created to widen the treatment area while maintaining the same gas flow used in traditional plasma jets.
  • Polypropylene samples were treated using CS-APPJ and analyzed with techniques like scanning electron microscopy (SEM) and Fourier-transformed infrared spectroscopy (FTIR).
  • Results showed that both sides of the sample were treated, but the chemical composition varied: the contact side had more oxygen groups, while the non-contact side had higher nitrogen content, suggesting an interesting phenomenon not widely discussed in existing literature.

Article Abstract

A conical-shaped atmospheric pressure plasma jet (CS-APPJ) was developed to overcome a standard limitation of APPJs, which is their small treatment area. The CS-APPJs increase the treatment area but use the same gas flow. In the present work, polypropylene samples were treated by CS-APPJ and characterized by scanning electron microscope (SEM), the contact angle, Fourier-transformed infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). It was observed that the treatment co-occurs on the face directly in contact with the plasma and on the opposite face (OF) of the samples, i.e., no contact. However, the treatment changed the chemical composition on each side; the OF is rougher than the direct contact face (DCF), probably due to the oxygen groups in excess at the DCF and nitrogen in quantity at the OF. Although simultaneous treatment of both sides of the sample occurs for most atmospheric plasma treatments, this phenomenon is not explored in the literature.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866843PMC
http://dx.doi.org/10.3390/polym15020461DOI Listing

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