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首页> 外文期刊>Trends in Ecology & Evolution >Evaluation of the effects of chitosan/multiwalled carbon nanotubes composite on physical, mechanical and biological properties of polymethyl methacrylate-based bone cements
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Evaluation of the effects of chitosan/multiwalled carbon nanotubes composite on physical, mechanical and biological properties of polymethyl methacrylate-based bone cements

机译：壳聚糖/多壁碳纳米管复合物对甲基丙烯酸甲酯基骨水泥物理，机械和生物学性能的评价

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摘要

Because of some undesirable properties of polymethyl methacrylate(PMMA) bone cement, it is necessary to adopt a new strategy to improve its function. In this study, after preparing of chitosan (CS) powder and CS/multiwalled carbon nanotubes (MWCNTs) composite powder, they were added to the PMMA bone cement in different percentages with homogeneous distribution. The results showed that by adding CS/MWCNTs to the PMMA, injectability and setting time were increased and maximum temperature and contact angle were decreased, significantly. Mechanical tests showed that by adding 25 wt. % of CS/MWCNTs to the PMMA, the compressive and bending strength were increased, significantly. According to the results obtained from the bioactivity and cellular activity test, by adding 25 wt. % of CS/MWCNTs to the PMMA, apatite like deposition and extra cellular matrix formation were increased, significantly. Accordingly, 25 wt. % PMMA-CS/MWCNTs composite can create a new approach to improve commercial bone cements.
机译：由于聚甲基丙烯酸甲酯（PMMA）骨水泥的一些不希望的性能，因此必须采用新的策略来改善其功能。在该研究中，在制备壳聚糖（Cs）粉末和Cs /多壁碳纳米管（MWCNT）复合粉末后，将它们以不同百分比的百分比添加到PMMA骨水泥中，以均匀分布。结果表明，通过向PMMA添加CS / MWCNT，可重新注射性和设定时间增加，显着降低了最高温度和接触角。机械测试表明，通过添加25重量％。显着增加了对PMMA的CS / MWCNT的百分比，压缩和弯曲强度增加。根据生物活性和细胞活性试验获得的结果，通过加入25重量％。显着增加了PMMA的CS / MWCNT的磷灰石，磷灰石磷灰石和额外的细胞基质形成。因此，25重量％。 ％PMMA-CS / MWCNTS复合材料可以创造一种改善商业骨水泥的新方法。

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