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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(06) [June 2007] >
| Title: | Effect of ϒ-irradiation on polyvinyl alcohol films doped with some dyes and their use in dosimetric studies |
| Authors: | Bhat, N V
Nate, M M
Bhat, R M
Bhatt, B C |
| Keywords: | Irradiation
Dyes
Plastic
Polyvinyl alcohol
Dosimeter |
| Issue Date: | Jun-2007 |
| Publisher: | CSIR |
| IPC Code: | G01T |
| Abstract: | Using polyvinyl alcohol (PVA), water-soluble polymer, thin films were prepared by incorporating some dyes. On subjecting these films to ϒ-radiation, it was found that there is a gradual change in the colour. In case of PVA film containing methyl red sudden discolouration occurs at a dose of 30 kGy, however, optical density change was not very contrasting. In case of acid red-4, there is a gradual fading of the red colour in the dose range 10-55 kGy. The PVA film (control) without dye shows development of brownish shade. These changes can be explained in terms of scission of main chain, liberation of the H and OH radicals and their interactions with the dye molecules. It is shown that these films can be used as cheap, portable and reliable plastic detectors for dosimetry. |
| Page(s): | 545-548 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.45(06) [June 2007]
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