Microstrain analysis of proton irradiated PET microfiber

摘要

The microstrain developed due to the molecular deformation of polymeric material because of MeV proton irradiation causes shifting of peak position of both X-ray diffraction lines and Raman bands in polyethylene terephthalate (PET) microfiber. This was investigated using X-ray diffractometer and micro-Raman spectrometer. In the present work, the PET microfiber of 1.5 dpf was irradiated with 3 MeV proton at small fluences I X 10(10) p/cm(2) to 1 X 10(12) p/cm(2). The radiation induced microstrain developed in PET microcrystallites and its size effect was investigated applying XRD. The shift of 0.5 cm(-1) in the Raman peak position of 1616 cm(-1) to a lower value due to proton irradiation at small fluences confirmed the development of microstrain. (c) 2006 Elsevier B.V. All rights reserved.