A Comparative Study Between Nano-cadmium Oxide and Lead Oxide Reinforced in High Density Polyethylene as Gamma Rays Shielding Composites


In this work, poly mer com pos ites of high den sity poly eth yl ene re in forced by mi cro-sized and nanosized cadmium ox ide, lead oxide, and a mix ture of both with filler weight frac tion of 30% were pre pared by com pres sion mold ing tech nique and char ac ter ized by scan ning electron mi cro scope. This in ves ti ga tion aims to pres ent a com par a tive study be tween cad mium ox ide and lead ox ide ac cord ing to their sizes as fill ers in high density poly eth yl ene poly meric ma trix for gamma-ra di a tion shield ing ap pli ca tions. The mass and lin ear at ten u a tion co ef fi - cients of the in ves ti gated com pos ites were measured as a func tion of g-ray en er gies rang ing from 59.53 keV to 1408.01 keV us ing stan dard ra dio ac tive point sources (241Am, 133Ba, 137Cs, 60Co, and 152Eu). The mea sure ments were made with a nar row beam ge om e try setup us ing a well cal i brated hy per pure ger ma nium cy lin dri cal de tec tor. The the o ret i cal val ues of the mass at ten u a tion co ef fi cients were eval u ated us ing the XCOM pro gram da ta base. The ex - per i men tal re sults dem on strated that, ac cord ing to the filler size, cad mium ox ide com pos ite is better as a gamma ab sorber in the en ergy re gion less than 81 keV, while lead ox ide com pos ite is better in the en ergy re gion greater than 81 keV. More over, for the same chem i cal structure and weight fraction of the com pos ite, nano fill ers show better atten u a tion per for mance than mi cro fill ers in high den sity poly eth yl ene based ra di a tion shield ing ma te rial.

Journal/Conference Information

Nu clear Technology & Radiation Protection,DOI:, Volume: 35, Issue: 1, Pages Range: 42-49,