可缝合的软γ射线辐射屏蔽物

Sewable soft shields for the γ-ray radiation.

机构信息

Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.

Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 08826, Republic of Korea.

出版信息

Sci Rep. 2018 Jan 30;8(1):1852. doi: 10.1038/s41598-018-20411-3.

DOI:10.1038/s41598-018-20411-3

PMID:29382928

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5790013/

Abstract

Soft shields are required to protect the human body during a radioactive accident. However, the modulus of most soft shields, such as HDPE and epoxy, is high, thereby making it difficult to process them in wearable forms like gloves and clothes. We synthesized a soft shield based on a hydrogel that is very compliant, stretchable, and biocompatible. The shields were fabricated by integrating γ-ray-shield particles into hydrogels with an interpenetrating network. The soft shields containing 3.33 M of PbO2 exhibited a high attenuation coefficient (0.284 cm) and were stretched to 400% without a rupture. Furthermore, the fabricated soft shield can be sewn without a fabric support due to its high energy-dispersion ability. A wearable arm shield for the γ-ray radiation was demonstrated using a direct sewing of the soft-shield materials.

摘要

在放射性事故中，需要使用柔软的屏蔽物来保护人体。然而，大多数柔软屏蔽物（如 HDPE 和环氧树脂）的模量都很高，因此很难将其加工成手套和衣服等可穿戴形式。我们合成了一种基于水凝胶的柔软屏蔽物，它具有非常好的柔韧性、拉伸性和生物相容性。这些屏蔽物是通过将γ射线屏蔽颗粒整合到具有互穿网络的水凝胶中来制造的。含有 3.33M 的 PbO2 的柔软屏蔽物表现出高衰减系数（0.284cm），并且可以拉伸至 400%而不会破裂。此外，由于其高能量分散能力，所制备的柔软屏蔽物无需织物支撑即可进行缝制。使用柔软屏蔽材料的直接缝制，演示了一种用于γ射线辐射的可穿戴手臂屏蔽物。