Synthesis of transparent X-ray shielding materials by radical polymerization of bismuth complex of acrylic acid dimer

Abstract

Bi-containing polymer films with a network structure were prepared through radical photopolymerization of liquid mixtures of monomers, which consisted of 2-carboxyethyl acrylate (2CEA) and a monomer derived in situ from BiPh3 and 2CEA. The cured films had good transparency, and their refractive indices (n_D) increased with the Bi content, reaching up to 1.58. The X-ray absorption ability of the cured films also increased with the increase of Bi content and was higher than that of aluminum.