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Surface Energy and Wettability of Plasma-treated Polyacrylonitrile Fibers

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Abstract

Polyacrylonitrile fibers were treated with a nitrogen glow-discharge plasma. The surfaces of untreated and treated fibers were examined with contact angle measurements, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Surface energy calculations of the fibers were carried out from contact angle measurements using the relationships developed by Fowkes. It is found that plasma treatment causes a reduction in water contact angle on the fiber surfaces. The dispersion component of surface energy changes slightly, while the polar component is increased significantly from 14.6 mN/m to 58.7 mN/m and the total surface energy increase is 139%. The increase of surface energy is mainly caused by the introduction of hydrophilic groups on the fiber surfaces after plasma treatment.

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Authors and Affiliations

  1. College of Chemistry & Chemical Engineering, Donghua University, Yan’an West Road 1882, Shanghai, 200051, The People’s Republic of China

    Yan Chun Liu & Da Nian Lu

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  1. Yan Chun Liu
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  2. Da Nian Lu
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Correspondence to Da Nian Lu.

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Liu, Y.C., Lu, D.N. Surface Energy and Wettability of Plasma-treated Polyacrylonitrile Fibers. Plasma Chem Plasma Process 26, 119–126 (2006). https://doi.org/10.1007/s11090-006-9005-7

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  • DOI: https://doi.org/10.1007/s11090-006-9005-7

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