I. Muzikante, E. Fonavs, R. Dobulāns, A. Tokmakov, B. Stiller, L. Brehmer, O. Neilands
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The thermally stimulated surface potential of betaine type host-guest polymer films
In this work betaine-type molecules were investigated. As a result of the asymmetry of charge distribution, molecules in the ground state have a considerable permanent dipole moment. The thermally stimulated surface potential dependences on poling temperature are investigated. The influence of /spl alpha/- and /spl beta/-relaxations of PMMA on the surface potential of the film are shown. The thermal dependence of surface potential is discussed. The transition temperature, where no changes of the surface potential appeared, is related to glass transition temperature of the host-guest system.
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