Abstract
We investigated concentration profile of end segment at the surface and the inside of thin polymer films by the mean field theory module of OCTA system (SUSHI) in various cases. In all cases, the end segments were placed near the surface and the tendency was notable with being thinner film. When the solvents existed in the system, it was clear that not only poor solvent but also good solvent bled out from the surface. And in the case of bimodal polymer blend, the surface layer consisted mainly by the low molecular weight component, but there also existed some high molecular weight component. We found that the ratio of the end segment of the high molecular weight component in the surface layer in this case was not low. Moreover, the concentration profile of low and high molecular weight component was vibrating many times to the center of the film.
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