Abstract
The swelling of a poly(styrene) (PS) glass by sorption of a fluorinated hydrocarbon, 3,5-bis (trifluoromethyl) aniline (TFMA) is considered in a regime characterized by so called case II diffusion. Attention is focused on diffusion and trapping of vapor into ion beam irradiated glassy PS by using nuclear resonance reaction analysis. The diffusion coefficient for the TFMA is dramatically decreased on irradiation with a 30 keV H+ with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. As an application of the observed effect, trapping the TFMA was carried out between two different ion beam irradiation regions into PS at room temperature. This feature may allow development of new kinds of devices for applications.
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