Chinese Journal of Applied Chemistry

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Effect of Air Corona Discharge Irradiation on the Surface Composition and Morphology of the Polyester Film

LIU Xiangdong, SHENG Dekun, GAO Xiumei, YANG Yuming*   

  1. (Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun 130022,China)
  • Received:2012-08-30 Revised:2012-12-13 Published:2013-07-10 Online:2013-07-10

Abstract: The surface composition and morphology of polyester film irradiated by air corona discharge was analyzed. The results show that the active groups are more inclined to migrate to the surface rather than transfer to the subsurface or substrate body in a hydrophilic environment. The amounts of C=O and OH introduced is increased with the increase of the intensity of corona irradiation. The XPS results show an increased content of CO, C=O and O—C, the binding energy of the new peak in the O1s spectrum is 532.49 eV, corresponding to the —O—O— peroxide bond on the surface. Atomic force microscopy studies show that the initial structure of polyester  film is replaced by a globular morphology, and the change in the surface roughness is in the range of about 10 nm.

Key words: corona discharge irradiation, polyester film, surface modification, contact angle, AFM

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