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ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Published monthly
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Photooxidation of polyvinyl-chloride) Changes in physical-properties due to the exposure to corona discharge
J. Polavka and L. Lapčík
Department of Physical Chemistry, Faculty of Chemical Technology,
Slovak Technical University, CS-812 37 Bratislava
Abstract: The influence of exposure of polyvinyl chloride) (PVC) to corona discharge on physical properties was investigated. It has been found that
transport process of diffusion of the cyclohexanone into the PVC obeys the
second Fick's law. The measured average apparent diffusion coefficients of
the studied system vary in the interval (0.9—2.5) x 10-10 m2 s-1 and increase
with exposure in an equal manner as the activation energies of diffusion
which vary in the interval (27.6—32.8) kJ mol-1 There have been determined: limiting angle of wetting Θ, temperature of glass transition Tg, and
absorption in the UV region. The dependence of the physical properties on
time of exposure of PVC to corona discharge is described. The changes in
the physical properties after the low-temperature plasma application are
similar and much faster than the photochemical changes caused by ultraviolet radiation.
Full paper in Portable Document Format: 432a259.pdf
Chemical Papers 43 (2) 259–266 (1989)
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