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Development of Green BaCO3/White Teak Wood Sandwich Composites for Effective X-Ray and Gamma-Radiation Shielding
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DOI：10.1002/pc.70990.png)
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Abstract
En 中文
Pb-based shielding has long-term environmental impacts and poses health risks, but developing effective, green, radiation-absorbing materials remains challenging. This study offers a novel alternative by combining BaCO3 and white teak wood (Gmelina arborea) in designing a lightweight, Pb-free sandwich composite structure. This composite is prepared by altering the content of BaCO3 within the core layer placed between outer layers of white teak wood. The BaCO3/white teak wood composite core layer is also fabricated with variations in the number of layers to evaluate its attenuation capacity. Fourier transform infrared spectroscopy and X-ray diffraction respectively confirm the presence of the carbonate phase via bands at ~850–860 cm−1 and strong diffraction peaks at 2θ ≈ 45° and 65°. Scanning electron microscopy/energy-dispersive X-ray spectroscopy analyses indicate that the concentration of BaCO3 decreases as the wood fraction increases. The composite with 30% BaCO3 and three core layers exhibits the optimal performance, with respective attenuation coefficients of 0.26–0.34 and 0.018 cm−1 for X-ray and gamma radiation. These findings indicate the potential of BaCO3/teak wood composites as effective, green, sustainable radiation-shielding materials.
Keywords:
barium carbonate
gamma-ray attenuation
radiation shielding
sandwich structures
teak wood composite
X-ray attenuation
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4.7
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2.1K
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2.3W
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