Study of polymeric nanocomposites prepared by inserting graphene and / or Ag, Au and ZnO nanoparticles in a TEGDA polymer matrix, by means of the use of dielectric spectroscopy
Valeria Alzari,
Daniele Nuvoli,
Vanna Sanna,
Tommaso Caruso,
Salvatore Marino,
Nicola Scaramuzza
Affiliations
Valeria Alzari
Department of Chemistry and Pharmacy, University of Sassari, Via Vienna, 2 - 07100 Sassari, Italy
Daniele Nuvoli
Department of Chemistry and Pharmacy, University of Sassari, Via Vienna, 2 - 07100 Sassari, Italy
Vanna Sanna
Department of Chemistry and Pharmacy, University of Sassari, Via Vienna, 2 - 07100 Sassari, Italy
Tommaso Caruso
Dipartimento di Fisica, Università degli Studi della Calabria Via P. Bucci, Cubo 31C - 87036 Rende (CS) – Italy
Salvatore Marino
Dipartimento di Fisica, Università degli Studi della Calabria Via P. Bucci, Cubo 31C - 87036 Rende (CS) – Italy
Nicola Scaramuzza
Dipartimento di Fisica, Università degli Studi della Calabria Via P. Bucci, Cubo 31C - 87036 Rende (CS) – Italy
Polymeric nanocomposites were prepared by inserting graphene and/or Ag, Au and ZnO nanoparticles in a TEGDA (tetraethyleneglycol diacrylate) polymer matrix. The polymeric films were characterized in terms of their dielectric properties by electrochemical impedance spectroscopy. The impedance data were fitted by generalized relaxation functions in order to determine conductivity, dielectric response and molecular relaxation time of the nanocomposite films. In particular, a stretched exponential function, Kohlrausch-Williams-Watts function (KWW), was used to investigate polymer/graphene/metal nanocomposites.
