Sewable soft shields for the γ-ray radiation.

Area of Science:

• Materials Science
• Radiation Physics
• Biomedical Engineering

Background:

• Traditional radiation shielding materials (e.g., HDPE, epoxy) possess high modulus, hindering their application in wearable forms.
• Development of flexible and biocompatible materials is crucial for personal protective equipment during radioactive accidents.

Purpose of the Study:

• To synthesize and characterize a novel soft shield based on hydrogel for effective gamma-ray attenuation.
• To evaluate the mechanical properties, stretchability, and processability of the hydrogel-based soft shield for wearable applications.

Main Methods:

• Hydrogel synthesis incorporating gamma-ray shielding particles (PbO2) within an interpenetrating network structure.
• Mechanical testing including tensile strength and stretchability measurements.
• Evaluation of radiation attenuation properties and sewing capabilities.

Main Results:

• The synthesized soft shields containing 3.33 M PbO2 demonstrated a high attenuation coefficient of 0.284 cm⁻¹.
• The hydrogel shields exhibited excellent stretchability, reaching up to 400% elongation without rupture.
• The material's high energy-dispersion ability allowed for direct sewing without fabric support.

Conclusions:

• Hydrogel-based soft shields represent a promising advancement in personal radiation protection.
• The developed material offers superior flexibility, biocompatibility, and processability compared to conventional shielding materials.
• Direct sewing capability enables the fabrication of customized, wearable radiation shields for enhanced safety.