Melt-compounded composites of ethylene vinyl acetate with magnesium sulfate as flexible EPR dosimeters: Mechanical properties, manufacturing process feasibility and dosimetric characteristics

Suman, Shankar; Kadam, R.M.; Mondal, R.K.; Murali, Shanthi; Dubey, K.A.; Bhardwaj, Y.K.; Natarajan, V.

doi:10.1016/j.apradiso.2016.11.022

Cited by 3 publications

(1 citation statement)

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“…EVA is a polymeric material which presents characteristics such as high flexibility [13], and good shielding properties [14]; it is widely used as rubber in various engineering structures; its chemical and physical properties are of interest in several areas of science [15,16]. A characteristic of the EVA is that the values of the ratio of mass energy absorption coefficients change with energy only slightly [17]; this fact is important in dosimetry especially in calibrations at different energies, when the dosimeter used could be water equivalent.…”

Section: Introductionmentioning

confidence: 99%

Ethylene-vinyl acetate detector exposed to gamma radiation and evaluated via principal component regression

Oliveira¹,

Nascimento²,

Antonio³

et al. 2022

Braz. J. Rad. Sci.

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Ethylene-vinyl acetate (EVA) is the flexible plastic material commonly used in industries. The EVA samples, in green, white and black colors were irradiated with absorbed doses of 0.01 kGy up to 10.0 kGy using a 60Co Gamma Cell-220 system, and the Fourier Transform Infrared (FTIR) spectrophotometry technique was used for evaluating the samples. This work aimed to investigate EVA samples in measurements with gamma radiation, analyzing the linearity through the Principal Component Regression (PCR) method and its sensitivity. For sensitivity and linearity, the green samples showed the best results, followed by white and black EVA samples. The PCR method inflated gradually the number of principal components, then reducing the residuals between the measured and calculated values, consequently obtaining maximum linearity of 1.000 for all EVA samples. In conclusion, the FTIR was adequate for the acquisition of absorbance spectra, the linearity via PCR and sensitivity showed good results indicating that the EVA detectors can be useful in radiation measurements.

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