In vitro Study on Biodegradable AZ31 Magnesium Alloy Fibers Reinforced PLGA Composite

AZ31 magnesium alloy fibers reinforced poly（lactic-co-glycolic acid） （PLGA） composites were prepared and their mechanical property, immersion corrosion behavior and biocompatibility were studied. The tensile test showed that with the addition of AZ31 fibers, the composites had a significant increment in tensile strength and elongation. For the direct cell attachment test, all the cells showed a healthy morphology and spread well on the experimental sample surfaces. The immersion results indicated that pH values of the immersion medium increased with increasing AZ31 fiber contents. All the in vitro experimental results indicated that this new kind of magnesium alloy fibers reinforced PLGA composites show a potential for future biomedical applications.

体育器材中石墨烯镁基复合纤维的应用研究

随着竞技体育的发展以及人们日益重视体育锻炼,无论是竞技体育的赛事还是大众体育的健身,对体育运动器材各方面性能的要求都越来越高。为解决目前体育运动器材的力学性能不足、耐磨耐腐蚀性不高等问题,尝试引入石墨烯作为增强体,利用其抗拉伸强度高、耐磨损性能好、耐腐蚀性高的优异特性对体育器材进行了改良试验,并与市面大量商用的AZ31镁合金材料进行对比。实验结果表明,石墨烯镁基复合材料制备的体育器材试样在力学性能、耐磨性能与耐腐蚀性能方面均有大幅提高,可以作为制作体育器材的更优质材料。