Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Influence of Inductively Coupled Oxygen Plasma on the Surface of Poly(ether sulfone)

  • Lee, Do Kyung (School of Advanced Materials Science and Chemical Engineering, Daegu Catholic University) ;
  • Sohn, Young-Soo (Department of Biomedical Engineering, Daegu Catholic University)
  • Received : 2022.06.30
  • Accepted : 2022.07.24
  • Published : 2022.07.31
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Abstract

The effect of inductively coupled plasma (ICP) treatment with O2 gas on the surface properties of poly(ether sulfone) (PES) was investigated. X-ray photoelectron spectroscopy (XPS) was used to analyze the chemical characteristics of the O2 plasma-treated PES films. The surface roughness of the pristine and O2 plasma-treated PES films for different RF powers of the ICP was determined using an atomic force microscope (AFM). The contact angles of the PES films were also measured, using which the surface free energies were calculated. The O1s XPS spectra of the PES films revealed that the number of polar functional groups increased following the O2 plasma treatment. The AFM analysis showed the average surface roughness increased from 1.01 to 4.48 nm as the RF power of the ICP was increased. The contact angle measurements revealed that the PES films became more hydrophilic as the RF power of the ICP was increased. The total surface energy increased with the RF power of the ICP, resulting from the increased polar energy component.

Keywords

Acknowledgement

This work was supported by research grants from Daegu Catholic University in 2021.

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