Abstract A new selective polymeric composite capped with crown ether was successfully synthesized using N -isopropyl acrylamide copolymerized acrylic acid paired Dibenzo-18-crown-6, P(NIPAm-Co-AA-DB 18C-6), by Gamma irradiation and ultrasonic homogenizer polymerization. Scanner electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering were used to chara...