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Title: Effect of exposure to electron beam irradiation in biopolymer papain and their electrical behaviour
Authors: Muthulakshmi, S
Chithralekha, P
Balaji, M
Sanjeev, Ganesh
Padiyan, D Pathinettam
Keywords: Papain;ac Impedance;Electron beam irradiation;Conductivity;Morphology
Issue Date: Jan-2013
Publisher: NISCAIR-CSIR, India
Abstract: The obtention of biopolymer papain irradiated with 8 MeV energy of electron beam to different doses from 1 kGy to 10 kGy and the effect of the radiation on the electrical behaviour of the biopolymer have been investigated in the temperature range 29°-135°C. The ac impedance plots indicate a single relaxation process in biopolymer papain in different temperatures. An increase in bulk electrical conductivity was noted for biopolymer papain with temperature after irradiation which is related to the hopping of charge carriers between the sites. The electrical conductivity of fresh and irradiated papain follows the universal power law and from which it is observed that the ac conductivity is frequency dependent and it obeys the electron tunneling model of conduction mechanism. The SEM images reveal the larger particle size with non-uniform structure upon irradiation of papain.
Page(s): 33-38
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.51(01) [January 2013]

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