Development of Functionalized Nano-precursor Gel Useful for Making Flexible and Moldable Radiation Shielding Material
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JMEPEG (2017) 26:1018–1025 DOI: 10.1007/s11665-017-2532-y
Development of Functionalized Nano-precursor Gel Useful for Making Flexible and Moldable Radiation Shielding Material Sarika Verma, S.S. Amritphale, and Satyabrata Das (Submitted June 19, 2016; in revised form December 30, 2016; published online February 6, 2017) For the first time (The patent application no. 201611000546 has been filed in India and USA.), nano-size Functionalized Brine sludge Precursor Material (FBSPM) containing multi-elemental and multi-shielding phases in the desired morphology and size has been synthesized by using conventional as well as microwave heating. It was reacted with polydimethylsiloxane for obtaining tailored hybrid inorganic–organic gel which is necessary for making advanced flexible and moldable x-ray radiation shielding material. The characterization studies of FBSPM confirm: (a) presence of shielding phases by XRD, (b) multi-elemental characteristics by EDS and (c) morphology and nano-size by FESEM. The quadrant of 15 mm thickness of the developed advanced flexible and moldable radiation shielding material has been tested for 30 kVp x-ray attenuation characteristics. Interestingly, it has been identified as providing 90% attenuation. The developed material possesses broad application spectrum ranging from x-ray and CT scanner room to nuclear power plants and other strategic radiation shielding installations. Keywords
Brine sludge, flexible shielding material, functional, nano-gel
1. Introduction The dependence of human beings upon modern technology involves mandatory interaction with radiations almost every hour. Among all other examples, usage of cell phone and microwave are classic examples. Radiations have enveloped us, starting from smallest; most frequently used electronic gadgets like mobile phones to lifesaving medical diagnosis techniques like MRI/CT scan to invisible space satellites radiations. The fact that these radiations have impacted mankind hazardously has forced material scientists to develop advanced functionalized nano-precursor materials for safeguarding the present and future generations from the harmful effects of radiations. Among the various materials, gels would be one of the most significant inventions as it will be highly useful for making flexible and moldable radiation shielding material/products. The conventional radiation shielding materials primarily include radiation shielding concretes and lead-incorporated polymer-based flexible shielding materials. The presence of lead in the shielding materials makes them toxic in nature as it ranks second in the list of hazardous material (Ref 1-4), and thus, there is a need to avoid the use of lead-based materials for shielding applications. Further, to improve the radiation shielding efficiency of material there is a need to develop shielding materials that are Sarika Verma, S.S. Amritphale, and Satyabrata Das, Division for Radiation Shielding and Cement Free Concrete Materials, CSIRAdvanced Material and Processes Research Institute, Hoshangabad Road, Bhopal
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