Highly wettable films were prepared by plasma‐polymerization from ethylene oxide. The surface energy of the formed films is 65.6 dyn/cm, and the contact‐angle of water on the films is 12 degrees. The formation of highly wettable films is limited to the plasma‐polymerization conducted at low W/FM values of below 200 MJ/kg. Analyses by infrared spectroscopy and ESCA show that the formed films contain much oxygen residues such as CO, CO, and C(O)O groups. Such polar groups would contribute high wettability of the plasma‐films from ethylene oxide.
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Inagaki et al. (1987) studied this question.
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