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首页> 外文期刊>Acta biomaterialia >A porous Cu/LDPE composite for copper-containing intrauterine contraceptive devices
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A porous Cu/LDPE composite for copper-containing intrauterine contraceptive devices

机译：用于含铜子宫内避孕器的多孔Cu / LDPE复合材料

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摘要

To improve the rates of both cupric ion release and the utilization of copper in non-porous copper/low-density polyethylene (Cu/LDPE) composite, a porous Cu/LDPE composite is proposed and developed in the present work. Here 2,5-di-tert-butylhydroquinone was chosen as the porogen, ethyl acetate was chosen as the solvent for extraction, and the porous Cu/LDPE composite was obtained by using injection molding and the particulate leaching method. After any residual ethyl acetate remaining inside the porous Cu/LDPE composite had been removed by vacuum drying, the composite was characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry and absorption measurement. For comparison, a non-porous Cu/LDPE composite was also characterized in the same way. The results show that the porous structure was successfully introduced into the polymeric base of the non-porous Cu/LDPE composite, and the porous Cu/LDPE composite is a simple hybrid of copper particles and porous LDPE. The results also show that the introduction of a porous structure can improve the cupric ion release rate of the non-porous Cu/LDPE composite with a certain content of copper particles, indicating that the utilization rate of copper can be improved either the introduction of a porous structure, and that the porous Cu/LDPE composite is another promising material for copper-containing intrauterine devices.
机译：为了提高铜离子在无孔铜/低密度聚乙烯（Cu / LDPE）复合材料中的释放速率和铜的利用率，在本工作中提出并开发了一种多孔Cu / LDPE复合材料。在此，以2，5-二叔丁基对苯二酚为致孔剂，以乙酸乙酯为萃取溶剂，采用注射成型和颗粒浸出法制得多孔Cu / LDPE复合材料。通过真空干燥除去残留在多孔Cu / LDPE复合物中的任何残留乙酸乙酯后，通过X射线衍射，扫描电子显微镜，傅立叶变换红外光谱，气相色谱-质谱和吸收测量对复合物进行表征。为了进行比较，还以相同的方式表征了无孔Cu / LDPE复合材料。结果表明，多孔结构已成功引入无孔Cu / LDPE复合材料的聚合物基体中，并且多孔Cu / LDPE复合材料是铜颗粒和多孔LDPE的简单混合物。结果还表明，引入多孔结构可以提高一定铜颗粒含量的无孔Cu / LDPE复合材料中铜离子的释放速率，表明引入铜或铜可以提高铜的利用率。多孔结构，并且该多孔Cu / LDPE复合材料是用于含铜子宫内装置的另一种有前途的材料。

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