Aging phenomena in polystyrene thin films

Details Aging phenomena in polystyrene thin films Aging phenomena in polystyrene thin films

2008-01-05

arxiv.org/abs/0801.0787v1

Eur. Phys. J. Special Topics 141, 199-202 (2007)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

The aging behavior is investigated for thin films of atactic polystyrene through measurements of complex electric capacitance. During isothermal aging process the real part of the electric capacitance increases with aging time, while the imaginary part decreases with aging time. This result suggests that the aging time dependence of the real and imaginary parts are mainly associated with change in thickness and dielectric permittivity, respectively. In thin films, the thickness depends on thermal history of aging even above the glass transition. Memory and `rejuvenation' effects are also observed in the thin films.

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