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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Study of optical, structural and chemical properties of neutron irradiated PADC film
Vacuum, Volume 86, No. 3, Year 2011
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Description
We have investigated neutron irradiation effects on the optical, structural and chemical properties of polyallyl diglycol carbonate (PADC) polymer, commercially named as CR-39. For this purpose, PADC samples were exposed with 4 MeV Am-Be neutron source at fluences varying from 2.36 × 106 to 5.94 × 107 n/cm2. The modifications so induced were analyzed using UV-Visible spectroscopy, X-ray diffraction Measurement (XRD), Photoluminescence (PL) and Fourier Transform infrared (FTIR) spectroscopy in the total attenuation reflection (ATR) mode. UV-Vis spectra of pristine and neutron irradiated PADC polymer sheets exhibit a decreasing trend in optical band gap. This decline in optical band gap with increasing fluence has been discussed on the basis of neutron irradiation induced defects in PADC. The XRD pattern of PADC shows the decreasing intensity of peak positions with increasing in fluence, which suggest that semicrystallinity of PADC changes slightly to amorphous phase after irradiation. At low fluence, crystallinity was found to increase but at higher fluence, it decreased which could be ascribed to neutron- induced defects in the polymer samples. Crystallite size calculated using Scherrer formula indicates a change and reflects the formation of disordered system in the irradiated polymer samples. The PL spectra show that the intensity of PL peak decreased with increase in fluence, which may be due to the disordered system via creation of defects in the irradiated polymer. The FTIR spectrum shows an overall reduction in intensity of the typical bands, indicating the degradation of PADC polymer after irradiation. These results so obtained can be used successfully in dosimetery using well reported protocols. © 2011 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Kumar, Vijay
India, Longowal
Sant Longowal Institute of Engineering and Technology
Sonkawade, Rajendra G.
India, New Delhi
Inter University Accelerator Centre India
Kurliya, Pawan Kumar
India, New Delhi
Inter University Accelerator Centre India
Singh, Nandita Lal
India, Vadodara
The Maharaja Sayajirao University of Baroda
Dhaliwal, Amarjit Singh
India, Longowal
Sant Longowal Institute of Engineering and Technology
Statistics
Citations: 51
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.vacuum.2011.07.001
ISSN:
0042207X