Phase-dependent dielectric properties and proton conduction of neopentyl glycol.

ABSTRACT: Phase-dependent dielectric properties and proton conduction of neopentyl glycol (NPG), which is an organic molecular plastic crystal, were studied via variable-temperature broadband dielectric spectroscopy (BDS). Permittivity and conductivity data show the phase transformations of NPG from the crystalline state to the plastic crystalline state at 315 K and then to the molten state at 402 K across the temperature range of 293-413 K. The Vogel temperatures (T _v) fitted from the Vogel-Fulcher-Tammann (VFT) equation agree well with the values extrapolated by the Stickel plot (linearized Vogel plot). Impedance and modulus data display a separation of the -Z'' (the imaginary part of the complex impedance) and M'' (the imaginary part of the complex electric

SUBMITTER: Pan H 

PROVIDER: S-EPMC9036410 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature