Structural and Optical Investigations of Radiation Damage in Transparent PET Polymer Films
Joint Authors
Prasad, Shiv Govind
De, Abhijit
De, Udayan
Source
International Journal of Spectroscopy
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-04-06
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Effects of gamma irradiation at different doses up to 135 kGy on polyethylene terephthalate (PET) polymer films have been investigated by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and ultraviolet-visible (UV-VIS) spectroscopy.
From XRD analysis, it was found that even at a high dose of gamma irradiation of 135 kGy, crystallinity of the PET samples remain unchanged.
However, the FTIR peak at 871 cm−1 (depicting C–H bending mode of out-of-plane vibration) and another at 1303 cm−1 (representing C–H bending mode of in-plane vibration) disappear for gamma-irradiated PET.
In this study, it has also been found that γ-irradiation in air enhances the optical absorption in the wavelength region 320–370 nm.
This has been attributed to free radicals being produced in the polymer by the γ-radiation.
Further, the free radicals react with oxygen of air to form carbonyl group and hydroxyls.
With increasing γ-dose, there is a red shift of the UV—near visible cutoff for PET.
XRD and FTIR observations on γ-damage have been correlated.
American Psychological Association (APA)
Prasad, Shiv Govind& De, Abhijit& De, Udayan. 2011. Structural and Optical Investigations of Radiation Damage in Transparent PET Polymer Films. International Journal of Spectroscopy،Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-499963
Modern Language Association (MLA)
Prasad, Shiv Govind…[et al.]. Structural and Optical Investigations of Radiation Damage in Transparent PET Polymer Films. International Journal of Spectroscopy No. 2011 (2011), pp.1-7.
https://search.emarefa.net/detail/BIM-499963
American Medical Association (AMA)
Prasad, Shiv Govind& De, Abhijit& De, Udayan. Structural and Optical Investigations of Radiation Damage in Transparent PET Polymer Films. International Journal of Spectroscopy. 2011. Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-499963
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-499963