Crosslinked plastic scintillators: A new detection system for radioactivity measurement in organic and aggressive media

Bagán, H.; Tarancón, A.; Ye, Lei; Garcı́a, J.F.

doi:10.1016/j.aca.2014.10.028

Cited by 18 publications

(1 citation statement)

References 25 publications

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“…However, the detection efficiency decreased regularly during subsequent loading and elution cycles, which was attributed to either washing out or to degradation of organic fluors and/or the extractants from the resins. Bagán et al 9 tried another approach through synthesizing microparticles crosslinked plastic scintillator for a and b determination in organic and aggressive media. Two different approaches were tried to overcome or limit the effect of this problem; the first one was achieved by encapsulating the organic fluor within the resin by grafting a thin layer of polymer from the beads surface by atom transfer radical polymerization.…”

Section: Introductionmentioning

confidence: 99%

Development of polymerizable 2-(1-naphthyl)-5-phenyloxazole scintillators for ionizing radiation detection

et al. 2015

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The synthesis, chemical characterization and optical properties of 2-(1-naphthyl)-4-vinyl-5phenyloxazole (vNPO) and 2-(1-naphthyl)-4-allyl-5-phenyloxazole (allylNPO) monomers are reported.Starting with the organic fluor 2-(1-naphthyl)-5-phenyloxazole (aNPO), the vNPO and allylNPO monomers were synthesized using Stille coupling followed by purification. The final products were obtained with yields of B95% and B55% for vNPO and allylNPO. The absorption/emission spectra of aNPO, vNPO and allylNPO revealed that vNPO has the largest red-shifted in emission with an average wavelength of B420 nm, which is an advantage for increasing photomultiplier tube sensitivity without the need to add a wavelength shifter. Stable scintillating resin beads were prepared through copolymerization of the newly synthesized fluor monomers with styrene or 4-methylstyrene and divinylbenzene in the presence of toluene porogen. The resin beads were chemically stable and retained the ability to scintillate efficiently after energy deposition of beta particles from 99 Tc. This result indicates efficient energy transfer occurs from the base polymer to the covalently attached fluors with subsequent fluorescence in the presence of ionizing radiation. † Electronic supplementary information (ESI) available: Listing of chemical analysis, scintillation measurement setup, 13 C spectra, GCMS chromatograms, optical image for the plastic beads and absorption/emission spectra. See Scheme 1 Synthesis of monomer 2-(1-naphthyl)-4-vinyl-5-phenyloxazole (vNPO) and 2-(1-naphthyl)-4-allyl-5-phenyloxazole (allylNPO).

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Section: Introductionmentioning

confidence: 99%

Development of polymerizable 2-(1-naphthyl)-5-phenyloxazole scintillators for ionizing radiation detection

et al. 2015

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Recyclable Robust Plastic Scintillation Resin Achieving the Exceptional Separation and Detection of Technetium‐99

Liu,

Hu,

Yang

et al. 2024

Advanced Science

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Rapid detection and absorption of 99TcO4⁻ contamination in the environment are critical due to its high radioactivity, long half‐life, and significant environmental mobility. Resins have been demonstrated effective bifunctional properties for both the detection and separation of 99TcO4⁻. However, the poor stability of these compounds limits their practical application. Here, a chemical grafting strategy is presented to synthesize ultra‐stable plastic scintillation resin, in which 4‐vinylpyridine and divinylbenzene are cross‐linked as matrix polymer to withstand extreme conditions and a fluorophore “shield” to convert beta radiation into detectable signals. As expected, the as‐obtained resin exhibits a high adsorption capacity of 549.2 mg g⁻¹ for 99TcO4⁻ with a rapid kinetic response of just 10 min as well as superior selectivity at 1000 times excess of interfering ions and full reusability. Moreover, it showed remarkable stability under 800 kGy, 3.0 mol L−1 HNO3 or 2.5 L solution continuous leaching, consistently maintaining high separation and detection efficiency after recycling 10 times. This strategy paves a new way to develop stable resin for the rapid capture and accurate measurement of 99TcO4⁻, which owns great potential for practical application.

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Plastic Scintillators in Environmental Analysis

Tarancón

Bagán

Garcı́a

2021

Topics in Applied Physics

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Crosslinked plastic scintillators: A new detection system for radioactivity measurement in organic and aggressive media

Cited by 18 publications

References 25 publications

Development of polymerizable 2-(1-naphthyl)-5-phenyloxazole scintillators for ionizing radiation detection

Development of polymerizable 2-(1-naphthyl)-5-phenyloxazole scintillators for ionizing radiation detection

Recyclable Robust Plastic Scintillation Resin Achieving the Exceptional Separation and Detection of Technetium‐99

Plastic Scintillators in Environmental Analysis

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