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Report No.

Microstructure formation on polymer surfaces induced by atomic oxygen irradiation; Free volumes of polymer surfaces

Goto, Aki*; Tagawa, Masahito*; Michishio, Koji*; Oka, Toshitaka   ; Yamashita, Shinichi*

Films of polyethylene, polypropylene and polystyrene were irradiated with AO, and their surface morphologies and free volumes were investigated. Nanoscale protrusions were formed for all sample surfaces with the AO fluences of $$10^{18}$$ atoms/cm$$^{2}$$ - $$10^{19}$$ atoms/cm$$^{2}$$. The free volumes in the surfaces within 40 nm - 50 nm decreased due to the AO irradiations.



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