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  • Atmospheric-pressure plasma assisted engineering of polymer surfaces: From high hydrophobicity to superhydrophilicity

    Author(s)
    Ma, Chuanlong
    Wang, Lei
    Nikiforov, Anton
    Onyshchenko, Yuliia
    Cools, Pieter
    Ostrikov, Kostya Ken
    De Geyter, Nathalie
    Morent, Rino
    Griffith University Author(s)
    Ostrikov, Ken
    Year published
    2021
    Metadata
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    Abstract
    To engineer polymer surfaces with long-lasting wettability properties and with high coating stability in aqueous media, we investigated the surface wettability of polyethylene terephthalate (PET) films treated by radio frequency (RF) atmospheric-pressure plasma. By combining plasma activation and hexamethyldisiloxane (HMDSO)-based plasma polymerization, stable PET surface properties from highly hydrophobic to superhydrophilic were achieved. The results clearly showed that the wettability of PET surfaces could be tuned from stable high hydrophobicity (>140°) to stable superhydrophilicity (<10°) with a minimized aging effect ...
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    To engineer polymer surfaces with long-lasting wettability properties and with high coating stability in aqueous media, we investigated the surface wettability of polyethylene terephthalate (PET) films treated by radio frequency (RF) atmospheric-pressure plasma. By combining plasma activation and hexamethyldisiloxane (HMDSO)-based plasma polymerization, stable PET surface properties from highly hydrophobic to superhydrophilic were achieved. The results clearly showed that the wettability of PET surfaces could be tuned from stable high hydrophobicity (>140°) to stable superhydrophilicity (<10°) with a minimized aging effect by using plasma activation of plasma deposited coatings. Surface roughness increase and CH3 groups introduction are primarily responsible for the coating hydrophobization, while the introduction of more oxygen-containing polar functional groups is the main factor leading to superhydrophilization. Importantly, the coatings engineered by this unique combination showed high stability in water over 14 days. Overall, this work contributes to the easy-to-overlook links between plasma activation and plasma polymerization, demonstrates that atmospheric-pressure RF plasma can be a versatile tool to control surface properties of polymers in a wide range from high hydrophobicity to superhydrophilicity with high coating stability in aqueous media and a negligible aging effect, which is promising for emerging biomedical applications.
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    Journal Title
    Applied Surface Science
    Volume
    535
    DOI
    https://doi.org/10.1016/j.apsusc.2020.147032
    Subject
    Nanomaterials
    Science & Technology
    Physical Sciences
    Chemistry, Physical
    Materials Science, Coatings & Films
    Publication URI
    http://hdl.handle.net/10072/400783
    Collection
    • Journal articles

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