Study of AC electrical conduction mechanisms in an epoxy polymer Wissal Jilani, Nissaf Mzabi, Olivier Gallot-Lavallée, Najla Fourati, Chouki Zerrouki, Rachida Zerrouki and Hajer Guermazi Eur. Phys. J. Plus, 130 11 (2015) 235 Published online: 25 November 2015 DOI: 10.1140/epjp/i2015-15235-9