Electron Beam Damage in Poly(vinyl chloride) and Poly(acrylonitrile) as Observed by Auger Electron Spectroscopy (original) (raw)
2003, Surface Science Spectra
AES spectra of spun-cast films of poly͑vinyl chloride͒ ͑PVC͒ and poly͑acrylonitrile͒ ͑PAN͒ were collected over a period of time to determine specimen damage during exposure to a 10 kV electron beam. For the PVC, loss of chlorine was observed over a period of 203 min to the extent that the final chlorine content was only 20% of its original value. PAN exhibited a loss in nitrogen content over a period of 120 min, but the rate of damage to the polymer was significantly less than PVC. A dose of approximately 7.0 ϫ 10 Ϫ5 C/cm 2 is needed for the chlorine concentration to fall from its original value by 10% ͑one definition of critical dose͒. For the PAN film, the critical dose is 1.3 ϫ 10 Ϫ3 C/cm 2 , approximately 20 times greater than for PVC, demonstrating a greater resistance to damage from a 10 keV electron beam.
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