Effect of gamma irradiation on optical and chemical properties of cellulose nitrate thin films

In this work, cellulose nitrate films were irradiated with different doses of gamma irradiations. The gamma irradiation doses were 25, 55, 120, and 170 kGy. The compositional transformation, optical properties, and morphological changes resulted from the gamma irradiation were obtained using differe...

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Bibliographic Details
Published in:Journal of adhesion science and technology 2017-06, Vol.31 (12), p.1314-1327
Main Authors: Zaki, M. F., Ali, Ali Mostafa, Amin, Rafat M.
Format: Article
Language:English
Subjects:
Cellulose nitrate
FTIR spectroscopy
Gamma irradiation
Gamma rays
Irradiation
Optical properties
Scanning electron microscopy
Spectrometry
Spectroscopy
surface morphology
UV/visible spectroscopy
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Summary:In this work, cellulose nitrate films were irradiated with different doses of gamma irradiations. The gamma irradiation doses were 25, 55, 120, and 170 kGy. The compositional transformation, optical properties, and morphological changes resulted from the gamma irradiation were obtained using different spectroscopic methods. These methods were Fourier transform infrared spectrometry, UV/visible spectrometry, and scanning electron microscope. The surface roughness, as well, for pristine and gamma-irradiated polymer films was determined. The obtained results exhibit changes in the absorbance intensities of the function groups of the irradiated cellulose nitrate films. An induced increase in the UV/visible absorption spectra with increase in the gamma irradiation was observed. A noticeable shifting in the UV/visible spectra toward higher wavelength and decrease in the optical band gap were observed as the gamma irradiation increases. As well, the number of carbon clusters and the activation energy were discussed. The morphological investigation indicates the decrease in the roughness surface with increasing of gamma irradiation.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2016.1255455