Accordingly, in this study a PA-EG thin film was prepared using toluene as the solvent, EGDMA as cross-linker, MMA as monomer, AA as modifier and AIBN as the initiator. In order to find suitable composition to achieve a homogenous thin film, percentages of EGDMA (20, 25 and 30% w/w) and AIBN (0.3 and 1.0% w/w) were changed and consequently several formulations were tested (Table 1).