Morphological changes and solvent resistance enhancement of PEDOT:PSS thin films irradiated by gamma rays
발표자
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초록
내용
High energy treatment with gamma-ray irradiation has been applied to modify the characteristics of conducting polymer films. When a polymer film is exposed to radiation, free radicals are generated in the molecular backbone. With this effect, we can tune the physical properties and electrical properties of the polymers and composites. In this research, we irradiated gamma rays on PEDOT:PSS thin films with a dose ranging from 1 kGy to 50 kGy. Through the solvent dipping test, we observed that irradiated PEDOT:PSS thin films have the good solvent resistance. Whereas the pristine film partially dissolved, irradiated ones at 30 kGy stayed intact for up to 37 h. To prove the relation between the high energy irradiation and solvent resistance, we analyzed the structural characterizations. The morphology and the atom ratio of surface of the film were characterized by SEM and XPS. Crystalline behaviors were investigated by XRD.