LDPE matrix composites reinforced with dysprosium-boron containing compounds for radiation shielding applications

Avcıoğlu S.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.927, pp.1-12, 2022 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 927
  • Publication Date: 2022
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Page Numbers: pp.1-12
  • Yıldız Technical University Affiliated: Yes


The growing adoption of neutron radiation technology by various industries and medical sectors have increased the interest in developing light, flexible, and reliable shielding materials. Herein, a composite powder containing boron carbidedysprosium tetraboride, dysprosium oxoborate, and dysprosium boron carbide compounds have been synthesized via one-pot sol-gel method and employed as a reinforcement material in the production of a novel low-density polyethylene (LDPE) matrix composite. The chemical, mechanical, morphological, thermal properties, and neutron radiation shielding performance of the composite are investigated. SEM-EDX investigations confirmed that reinforcement particles were homogeneously dispersed and strongly encapsulated in the LDPE matrix. The tensile strength, Young’s modulus, and elongation at break of the LDPE matrix composite were found to be 12.3 MPa, 203.7 MPa, and 82.7%, respectively. Moreover, 1.7 wt% particles reinforced the LDPE matrix composite provided 31.63% and 49.64% neutron shielding at 2.5 mm and 5 mm plate thickness, respectively. The developed composite exhibited not only effective neutron shielding performance but also was competitive with a pure boron carbide-containing LDPE matrix composite. As dysprosium provides larger gamma-ray protection relative to boron, the developed LDPE matrix composite can be promising for safety applications requiring protection against both neutron and gamma radiations.