Experimental investigations on the beta attenuation properties of lead monoxide – Polycarbonate composite films

Kandagal, Vijayashri Ashok; Mirji, Rajeshwari; Lobo, Blaise

doi:10.1016/j.matpr.2021.09.320

Cited by 2 publications

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References 10 publications

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“…The EB study on these prepared (PbO-filled PC) composites has significance in the field of radiation shielding, where PbO-filled PC composites have been used as radiation shielding materials (for both beta and gamma radiation) [50] during transport of radioactive sources, in the preservation of radio active sources, in nuclear reactors, and in medical applications where there is a possibility to produce EB radiation by the deceleration of electrons.…”

Section: Introduction mentioning

confidence: 99%

External Bremsstrahlung Studies on Films of Lead Monoxide Filled Polycarbonate Composite

Kandagal,

Lobo

2023

Atom Indo.

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The development of high-Z (high atomic number) radiation shielding materials is vital in order to protect personnel who work with harmful gamma radiation sources. At the same time, the emission of external bremsstrahlung (EB) radiation in those shielding materials when the radiation source emits beta particles as well as gamma radiation is also of prime concern.The production of EB in films of lead monoxide (PbO) loaded polycarbonate (PC) composite at eleven different filler levels (FLs) varying, in terms of weight fraction, from 0.0 % up to 10.0 % were investigated experimentally by using beta particles from strontium-90/yttrium-90 (90Sr/90Y) radioactive source. A nonlinear relation is observed between EB intensity and target thickness. The effective atomic numbers of the prepared PbO-filled PC composite films (at different FLs) were determined via EB measurements, followed by calculations, and the values obtained were compared with the modified atomic numbers which were determined for the same composite films (at different FLs) using the Markowicz and Van Grieken equation, and it was found that they are in good agreement. Finally, the atomic number dependence of EB in these composite films (PbO-filled PC composites) has been studied. It is obtained that the intensity of EB spectra depends on the square of the atomic number of the target material.

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Section: Introduction mentioning

confidence: 99%

External Bremsstrahlung Studies on Films of Lead Monoxide Filled Polycarbonate Composite

Kandagal,

Lobo

2023

Atom Indo.

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“…Even though PC has many applications, it has a few drawbacks such as high cost, hard coating, and low scratch resistance. To overcome these drawbacks, different fillers have been used such as lead monoxide [16], magnesium oxide [17], bismuth nitrate [18], zinc sulfide [19], short carbon fibers [20], basalt fibers [21], and heated aluminum [22]. Bismuth oxychloride (BiOCl) is a completely non-toxic photo-catalytic material, having desirable properties such as resistance to corrosion, chemical stability, a unique layered structure [23], and good electrical, optical, and magnetic properties [24].…”

Section: Introductionmentioning

confidence: 99%

UV induced changes in bismuth oxychloride–filled polycarbonate composite films

Kandagal,

Lobo

2023

Academia Materials Science

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Bismuth oxychloride (BiOCl)-filled polycarbonate (PC) composite films have been prepared at five different filler levels (FLs), that is, at 0, 5, 15, 25, and 35 wt.% (of BiOCl in PC), by using the solution casting method. These composites were irradiated with UV-C radiation at a wavelength of 254 nm for four hours and were studied before and after UV-C irradiation. The prepared composites showed three fluorescence emission peaks for pristine PC, at wavelengths of 415, 440, and 467 nm, and the emission peak intensity increases with an increase in FLs and exposure time to UV irradiation. There is a structural transformation of the sample, from the amorphous nature of PC to the crystalline nature of BiOCl-filled PC composite samples, which has been confirmed by the XRD technique; the degree of crystallinity has increased with an increase in FL. SEM images confirm that surface morphological changes take place due to an increase in BiOCl content in the PC matrix with an increase in FL. The uniform distribution of BiOCl in PC has been confirmed by observing the AFM images. A single-step decomposition phenomenon is observed from the TGA curves, and pristine PC has greater mass loss and thermal stability among all the filled and irradiated BiOCl-filled PC composite films.

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Experimental investigations on the beta attenuation properties of lead monoxide – Polycarbonate composite films

Cited by 2 publications

References 10 publications

External Bremsstrahlung Studies on Films of Lead Monoxide Filled Polycarbonate Composite

External Bremsstrahlung Studies on Films of Lead Monoxide Filled Polycarbonate Composite

UV induced changes in bismuth oxychloride–filled polycarbonate composite films

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