چكيده به لاتين
Conductive polymers have been widely used in the design of microwave absorbers, while the effect of energy strip on wave absorption properties has not yet been investigated. In this study, polyaniline energy strip was changed by changing the amount of pollutant and its effect on microwave properties was carefully analyzed. Polyaniline was synthesized as a pollutant by a new complementary method using DBSA and identified by FT-IR, FE-SEM, VSM and XRD analyses. Also, the optical performance of the produced nanocomposite was investigated by DRS analysis. The results of the four-point electrical conductant showed that the modified polyaniline had an extraordinary electrical conductivity of 449.51 S/Cm. Finally, the reflection loss of nanocomposite was investigated by VNA analysis. The results testified that the amount of pollutant agent has a distinct relationship with energy strip, direct electrical conductivity and absorption properties of microwave waves. The mentioned composite brought a bandwidth of 7.05 GHz with a reflection loss of more than 10 dB with a thickness of 2.25 mm. And also, polyaniline 5.0/polyacrylonitrile showed an effective bandwidth of 2.47 GHz with a maximum reflection loss of more than 20 dB with a thickness of 1.75 mm. Interestingly, polyaniline 2.5 and polyaniline 10.0/polyacrylonitrile composites showed more than 9 dB electromagnetic shield capability at frequency from 8.2 to 18 GHz.
