Dielectric relaxations investigation of a synthesized epoxy resin polymer Wissal Jilani, Nissaf Mzabi, Olivier Gallot-Lavallée, Najla Fourati, Chouki Zerrouki, Rachida Zerrouki and Hajer Guermazi Eur. Phys. J. Plus, 130 4 (2015) 76 Published online: 20 April 2015 DOI: 10.1140/epjp/i2015-15076-6