Maxwell-Wagner-Sillars Dynamics and Enhanced Radio-Frequency Elastomechanical Susceptibility in PNIPAm Hydrogel-KF-doped Barium Titanate Nanoparticle Composites

摘要

Bulk PNIPAm temperature-dependent spectroscopy. Real and imaginary conductivity ( , top left), dielectric constant ( , bottom left) at 27 °C (black), 33 °C (red), and 37 °C (green) for bulk PNIPAm formed using free radical polymerization. (top right) The temperature (T)–dependent conductivity  ′ ( ,  ) shows a strong decrease around the phase transition temperature of ~ 32 °C. (bottom right) d (log   ′ )/d log (f) at 27 °C (black), 33 °C (red), and 37 °C (green) showing the extent of MWS polarization in the sample