Enhanced Hydrophobicity, Thermal Stability, and X-Ray Shielding Efficiency of BaSO4/P(VDF-HFP) Nanocomposites for Advanced Lead-Free Radiation Protection
Chaiporn Kaew-on, Jureeporn Yuennan, Nikruesong Tohluebaji, Phongpichit Channuie, Soraya Ruangdit, Ritiron Samran, Thanaphorn Tochomphoo, Ratchanewan Siri
Abstract
In this research, polymer composite sheets were developed by blending poly (vinylidene fluoride-co-hexafluoropropylene) or P(VDF-HFP) with varying concentrations of barium sulfate (BaSO4) for X-ray shielding applications. The photon counting technique was used to evaluate the composite shielding characteristics through the linear attenuation coefficient. Surface properties, including surface morphology, hydrophobicity, and surface energy, were analyzed using an atomic force microscope (AFM) and a water contact angle machine. Scanning electron microscopy (SEM) was employed to investigate the microstructural distribution and dispersion of BaSO4 particles within the polymer matrix, providing insights into the composite’s uniformity and structural integrity. Additionally, the bulk properties of the composite polymer sheets, such as crystal structures, tensile strength, and thermal stability, were examined. The results demonstrate that increasing the concentration of BaSO4 in BaSO4/P(VDF-HFP) composite sheets significantly improves their X-ray attenuation capabilities. Moreover, higher BaSO4 concentrations enhance the material’s hydrophobicity, flexibility, and thermal stability, highlighting the potential of these composites for advanced radiation shielding applications.