期刊
BIOMATERIALS
卷 26, 期 15, 页码 2671-2676出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2004.08.003
关键词
LDPE; copper; nanocomposites; IUD; elemental mapping
We prepared copper/low-density polyethylene (LDPE) nanocomposites with various mass fractions of copper nanoparticles and investigated the Cu2+ release rate of them for 220 days in a simulated uterine solution The influences of copper nanoparticle mass fraction on CU2+ release and volume resistivity confirm that continuous network of copper nanoparticles can be obtained in composites when copper nanoparticle mass fraction ranges from 30% to 35%. Scanning electron microscopy with energy dispersive X-ray microanalysis (SEM/EDX) mapping technique was employed to investigate the copper distribution and corrosion depth of 30 wt% copper/LDPE composite before and after incubation. Besides, elements and phases were also analyzed by EDX and X-ray diffraction, respectively. The results suggest that copper/LDPE nanocomposites should be more efficient and feasible than conventional IUD materials. (C) 2004 Elsevier Ltd. All rights reserved.
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