Title: Dielectric signature of a dead layer in ultrathin films of a nonpolar polymer
Authors: Napolitano, Simone ×
W├╝bbenhorst, Michael #
Issue Date: 18-Aug-2007
Series Title: The journal of physical chemistry. B vol:111 issue:31 pages:9197-9
Abstract: Extremely thin films of poly(styrene) (h<or=6 nm), in the geometry of "model" nanocomposites, show a continuous increase of the capacitance with temperature. This phenomenon is discussed in terms of a gradual defreezing of the interfacial zone between the so-called dead layer and the bulk. Such a mechanism shows a strong analogy to the dielectric response of the rigid amorphous fraction in semicrystalline materials. The defreezing process, foregoing the dynamic glass transition, is responsible for the temperature dependence of the deviations from bulk behavior.
ISSN: 1520-6106
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
× corresponding author
# (joint) last author

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