M. Priya; k. Sathyamoorthy; p. Vinothkumar; Ro. Mu. Jauhar; p. Murali Manohar; A. Selvam
Abstract
The Mannitol single crystal was grown by slow evaporation technique and irradiated by gamma radiation. Single crystal XRD analysis showed that irradiation not changed the crystal system. The crystalline perfection of pure and irradiated Mannitol single crystal were studied by high resolution X-ray diffraction ...
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The Mannitol single crystal was grown by slow evaporation technique and irradiated by gamma radiation. Single crystal XRD analysis showed that irradiation not changed the crystal system. The crystalline perfection of pure and irradiated Mannitol single crystal were studied by high resolution X-ray diffraction analysis. The optical behaviour of pure and irradidated Mannitol was verified by the changes in the affected cut-off wavelength. The laser damage threshold was calculated for pure and irradiated Mannitol using laser source. The second harmonic generation of pure and gamma irradiated Mannitol were studied using Nd:YAG laser source and observed that SHG intensity decreases with increasing dose of gamma radiation.
Subhashree Patra; Pinaki Chatterjee; Kamal L. Mohanta; Chhatrapati Parida
Abstract
Modification of surface of natural fiber by gamma irradiation is an effective and economical technique and of viable interests in the terrain of biocomposites. The response of doses (0.5 Gy,1Gy and 2 Gy) of gamma irradiation of 6MV energy on the structural, tensile and flexural ...
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Modification of surface of natural fiber by gamma irradiation is an effective and economical technique and of viable interests in the terrain of biocomposites. The response of doses (0.5 Gy,1Gy and 2 Gy) of gamma irradiation of 6MV energy on the structural, tensile and flexural properties of composites using poly lactic acid (PLA) and fibers of luffa cylindrical (LC) is studied. Preliminary results suggests promising mechanical properties. After reinforcement of irradiated LC fiber, the tensile strength and flexural strength of the virgin PLA matrix increases by 60% and 155% respectively. The E-modulus of the composites are also heightened with addition of irradiated fiber up to the limit of 1 Gy of irradiation dose and then decreases with higher dose of irradiation. Furthermore the tensile strength and flexural strength of the composites increases with incorporation of very low content of LC fiber up to 2wt% and decreases with higher loading of fibers (5wt% and 10wt%). Modulus of composites is enhanced with increase in wt of fiber content in the composites. Moreover beefore reinforcement the LC fibers are modified with Ca salts in order to explore the use of these composites in biomedical territory. Copyright © 2018 VBRI Press.
