Dielectric properties of polyamide 12-chromium (III) oxide nanocomposites
https://doi.org/10.17586/2220-8054-2016-7-3-472-478
Abstract
Broadband dielectric spectroscopy was employed to study polymer nanocomposites based on PA12 filled with different loading (0.1 – 10 wt.%) of nanosized (average grain size of about 1 – 5 nm) chromium (III) oxide. The experimental dielectric data were analyzed within the formalisms of complex permittivity and electric modulus. Three relaxation processes and Maxwell–Wagner–Sillars (MWS) interfacial polarizations were observed. It was found that all the relaxations were sensitive to filler contents. The presence of nanosized amphoteric chromium (III) oxide was shown to lead to the softening of the polyamide matrix that manifested in decrease of the activation energy of the αand β-relaxation processes and glass transition temperatures. The softening of polymer matrix is the reason for the decrease in the mechanical properties of the polymer nanocomposites as compared to that of neat PA12.
About the Authors
E. S. Shapoval
ITMO University
Russian Federation
Russian Federation
Kronverkskiy pr., 49, 197101 St. Petersburg
V. V. Zuev
ITMO University; Institute of Macromolecular Compounds of the Russian Academy of Sciences
Russian Federation
Russian Federation
Kronverkskiy pr., 49, 197101 St. Petersburg; Bolshoi pr., 31, 199004 St. Petersburg
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Review
For citations:
Shapoval E.S., Zuev V.V. Dielectric properties of polyamide 12-chromium (III) oxide nanocomposites. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(3):472-478. https://doi.org/10.17586/2220-8054-2016-7-3-472-478
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