医用有效辐射屏蔽石墨烯增强聚合物复合材料的制备与评价

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-24 DOI:10.1016/j.radphyschem.2025.113331

Halimi Muhamad Rusli , Mohammad Khairul Azhar Abdul Razab , Suffian Mohamad Tajudin , Mohd Zahri Abdul Aziz , Norazlina Mat Nawi , Muhammad Azwadi Sulaiman , Reduan Abdullah , Noraina Adam

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引用次数: 0

摘要

由氧化石墨烯（GO）、银（Ag）、锡（Sn）和钨(W)纳米颗粒增强的聚醋酸乙烯酯（PVAc）纳米复合材料已成为医疗应用的有前途的材料，包括防护服和用于更安全放射治疗的屏蔽屏障。采用改进Hummers法制备氧化石墨烯，微波辐照法制备银纳米颗粒。制备了30个不同填充率的PVAc复合材料样品，对其结构和功能性能进行了评价。UV-Vis和FTIR分析证实了氧化石墨烯的成功掺入，而FESEM和EDX则证明了纳米颗粒的均匀分散和元素组成。XRD和TEM进一步验证了纳米金属填料的分子排列和内部结构的整合。在0.364 MeV光子能量下，S-5的质量衰减系数（MAC）为7.36 cm2/g，线性衰减系数（LAC）为14.18 cm−1，半值层（HVL）为0.0489 cm，十值层（TVL）为0.16 cm，平均自由程（MFP）为0.0705 cm，辐射防护效率（RPE）为75.88%。S-5还表现出卓越的机械强度，使其适用于精密医疗中的耐用防护设备。PHITS模拟结果显示了有效度和信度，误差小于0.05。这些发现突出了PVAc-GO-Ag-Sn-W纳米复合材料在临床环境中作为有效、轻量化和无铅的辐射防护替代品的潜力。

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Fabrication and evaluation of graphene oxide-enhanced polymer composites for effective radiation shielding in medical applications

Polyvinyl acetate (PVAc) nanocomposites reinforced with graphene oxide (GO), silver (Ag), tin (Sn), and tungsten (W) nanoparticles have emerged as promising materials for medical applications, including protective garments and shielding barriers for safer radiotherapy treatment. GO was synthesized using a modified Hummers’ method, while Ag nanoparticles were prepared via microwave irradiation. A total of 30 PVAc composite samples with varying filler ratios were fabricated to evaluate their structural and functional properties. UV–Vis and FTIR analyses confirmed the successful incorporation of GO, while FESEM and EDX demonstrated uniform nanoparticle dispersion and elemental composition. XRD and TEM further validated the molecular arrangement and internal structural integration of the nano-metal fillers. S-5, which contained the highest filler content, exhibited improved radiation shielding performance at 0.364 MeV photon energy, achieving mass attenuation coefficient (MAC) of 7.36 cm²/g, linear attenuation coefficient (LAC) of 14.18 cm⁻¹, half-value layer (HVL) of 0.0489 cm, tenth-value layer (TVL) of 0.16 cm, mean free path (MFP) of 0.0705 cm, and radiation protection efficiency (RPE) of 75.88 %. S-5 also demonstrated exceptional mechanical strength, making it suitable for durable protective equipment in precision medicine. PHITS simulations showed validity and reliability with an error below 0.05. These findings highlight the potential of PVAc-GO-Ag-Sn-W nanocomposites to be used as effective, lightweight, and lead-free alternatives for radiation protection in clinical settings.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.