Abstract
Abstract The degradation behavior and mechanism of polytetrafluoroethylene (PTFE) under low energy protons irradiation was investigated. Optical transmittance and Fourier transformed Infrared spectrometer (FTIR) indicate that there produce two kinds of specific defects during the proton irradiation, leading two optical absorption peaks at about 200 nm and 240–280 nm. The results of X-ray photoelectron spectroscopy (XPS) indicate that there include the processes of defluorination in the first stage and then carbonization in PTFE during proton irradiation. In addition, the results of electron paramagnetic resonant spectra (EPR) demonstrate the evolution of radicals that transform from peroxy radicals (g = 1.9907) to another pyrolytic carbon ones (g = 2.0025). The population evolutions of both kinds of the radicals are investigated and determined dependent on the fluence and also the degradation mechanisms.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
