Kim Seon-Chil, Hou Jian, Jang Won-Gi, Byun Hong-Sik
Department of Medical Informatics, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Republic of Korea.
Department of Biomedical Engineering, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Republic of Korea.
Polymers (Basel). 2024 Jan 12;16(2):215. doi: 10.3390/polym16020215.
Tungsten is the most effective eco-friendly material used for radiation shielding in hospitals. However, despite its commendable density and shielding performance, tungsten faces challenges in miscibility with other materials because of its elevated melting point and strength. In this study, to protect medical personnel against scattered rays, which are indirect X-rays, a lightweight material was prepared by mixing graphite oxide material, considering its thinness and flexibility. Tungsten particles were evenly dispersed in the polymer, and nanofibers were prepared using this blended polymer solution via electrospinning. Concurrently, the process technology was explored to craft a thin film sheet and obtain a lead-like shielding effect. A spinning solution was prepared by mixing FeO-rGO (FerGO) and tungsten. At 60 kVp, 0.1 mm was measured as 0.097 mmPb, at 80 kVp, 0.2 mm was measured as 0.196 mmPb, and at 100 kVp, 0.3 mm was measured as 0.279 mmPb, showing similar shielding performance to lead. As density directly affects the shielding effect, graphene oxide played an important role in increasing the density of the material from 1.941 g/cm to 2.302 g/cm. Thus, this study provides an effective process for producing thin film sheets equivalent to lead.
钨是医院中用于辐射屏蔽的最有效的环保材料。然而，尽管钨具有值得称赞的密度和屏蔽性能，但由于其熔点和强度较高，在与其他材料的混合性方面面临挑战。在本研究中，为了保护医护人员免受作为间接X射线的散射射线的伤害，考虑到氧化石墨材料的薄度和柔韧性，通过混合该材料制备了一种轻质材料。将钨颗粒均匀分散在聚合物中，并使用这种混合聚合物溶液通过静电纺丝制备纳米纤维。同时，探索了制备薄膜片材并获得类似铅的屏蔽效果的工艺技术。通过混合FeO-rGO（FerGO）和钨制备纺丝溶液。在60 kVp时，测得0.1 mm相当于0.097 mm铅；在80 kVp时，测得0.2 mm相当于0.196 mm铅；在100 kVp时，测得0.3 mm相当于0.279 mm铅，显示出与铅相似的屏蔽性能。由于密度直接影响屏蔽效果，氧化石墨烯在将材料密度从1.941 g/cm提高到2.302 g/cm方面发挥了重要作用。因此，本研究提供了一种生产等同于铅的薄膜片材的有效工艺。
