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Title: 70 MeV Carbon C5+ ion beam induced modifications in polyethylene terphthalate polymer
Authors: Kumar, Rajesh
Singh, Paramjit
Virk, H S
Prasad, Rajendra
Keywords: PET;C5+ ion irradiation;Ion beam modification;FTIR;UV-Vis;X-ray diffraction
Issue Date: Jan-2010
Publisher: CSIR
Abstract:  Physical and chemical changes induced by 70 MeV carbon ions C5+ have been studied in bulk polyethylene terephthalate (PET) polymer by UV-Visible (UV-Vis), Fourier transform infrared (FTIR) spectroscopy and X-ray diffractometer (XRD). Swift Heavy Ion (SHI) irradiation was carried out in vacuum at the Pelletron facility of Nuclear Science Centre, New Delhi, India using ion beam fluences of 3.0×1011, 3.7×1012, 1.8×1013 and 5.6×1013 and 1.2×1014 ions/cm2. UV-Visible spectra reveal both chain-scission and cross-linking of PET. FTIR spectra show a significant loss of crystallinity at low radiation doses but recovery of pristine structure at a fluence of 5.6×1013 ions/cm2. Both UV-Visible and FTIR spectra support the conclusion that molecular reorientation of PET leading to recovery of original structure is affected at high irradiation dose of carbon ions. XRD spectra for both virgin and irradiated PET also confirm this conclusion.
Page(s): 16-19
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.48(01) [January 2010]

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