Affiliation:
1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Textiles Donghua University Shanghai 201620 China
2. Innovation Center for Textile Science and Technology Donghua University Shanghai 200051 China
Abstract
AbstractBi2O3/rare earth oxide biphasic absorbers are attractive for high‐efficiency X‐ray shielding due to the complementary X‐ray absorption effects. However, its application is severely hindered by poor interphasic contact. Here, a new Janus interface engineering strategy is reported for the construction of continuous and flexible Bi2O3/Gd2O3 crystal nanofibrous membranes (FJNMs) with micro/nano dual self‐strengthening interphasic adhesion. This strategy facilitates online micro‐interlocking between Bi2O3/Gd2O3 nanofibers and in situ nano‐grain fusion between Bi2O3/Gd2O3 crystals, significantly enhancing the adhesive strength at the Bi2O3/Gd2O3 interface. Additionally, the synergistic shielding effect from Bi2O3/Gd2O3 absorption and multiple reflections in Bi2O3 and Gd2O3 crystal lattices make the nanofibrous membranes a superior X‐ray radiation barrier. The FJNMs demonstrate integrated features of exceptional X‐ray shielding efficiency (91%–100%), robust interfacial adhesion (lap‐shear strength >3.8 MPa), prominent flexibility, lightweight, and outstanding breathability. The design concepts of fibrosing biphasic absorber assemblies pave the way for asymmetrically assembling biphasic materials, setting the stage for a fundamental shift in next‐generation radiation shielding materials.
Funder
National Natural Science Foundation of China
Science and Technology Commission of Shanghai Municipality
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
10 articles.
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