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首页> 外文期刊>ACS applied materials & interfaces >Porous Nanogold/Polyurethane Scaffolds with Improved Antibiofilm, Mechanical, and Thermal Properties and with Reduced Effects on Cell Viability: A Suitable Material for Soft Tissue Applications
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Porous Nanogold/Polyurethane Scaffolds with Improved Antibiofilm, Mechanical, and Thermal Properties and with Reduced Effects on Cell Viability: A Suitable Material for Soft Tissue Applications

机译:多孔纳米多叶/聚氨酯支架具有改进的抗抗抗体,机械和热性能以及对细胞活力的减少影响:软组织应用的合适材料

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摘要

The use of implants carries on a series of problems, among them infections, poor biocompatibility, high levels of cytotoxicity, and significant mechanical differences between implants and host organs that promote stress shielding effects. These problems indicate that the materials used to make implants must meet essential requirements and high standards for implantations to be successful. In this work, we present the synthesis, characterization and evaluation of the antibiofilm, mechanical, and thermal properties, and cytotoxic effect of a nanocomposite-based scaffold on polyurethane (PU) and gold nanoparticles (AuNPs) for soft tissue applications. The effect of the quantity of AuNPs on the antibacterial activity of nanocomposite scaffolds was evaluated against Staphylococcus epidermidis and Klebsiella spp., with a resulting 99.99% inhibition of both bacteria using a small quantity of nanoparticles. Cytotoxicity was evaluated with the T10 1/2 test against fibroblast cells. The results demonstrated that porous nanogold/PU scaffolds have no toxic effects on fibroblast cells to the 5 day exposition. With respect to mechanical properties, stress strain curves showed that the compressive modulus and yield strength of PU scaffolds were significantly enhanced by AuNPs (by at least 10 times). This is due to changes in the arrangement of hard segments of PU, which increase the stiffness of the polymer. Thermogravimetric analysis showed that the degradation onset temperature rises with an increase in the quantity of AuNPs. These properties and characteristics demonstrate that porous nanogold/PU scaffolds are suitable material for use in soft tissue implants.
机译:植入物的使用涉及一系列问题,其中包括感染,生物相容性差,细胞毒性高,细胞毒性高,植入物和宿主器官之间的显着机械差异,促进应力屏蔽效果。这些问题表明,用于制造植入物的材料必须满足要成功的植入的基本要求和高标准。在这项工作中,我们介绍了抗生素,机械和热性质的合成,表征和评价,以及用于软组织应用的聚氨酯(PU)和金纳米粒子(AUNP)上的纳米复合材料的支架的细胞毒性作用。对亚麻复合支架的抗菌活性的影响对纳米复合材料支架的抗菌活性进行评价,并用少量纳米颗粒抑制两种细菌的​​99.99%。通过针对成纤维细胞进行T101 / 2测试评价细胞毒性。结果表明,多孔纳米光/普支架对成纤维细胞对5天阐述没有毒性作用。关于机械性能,应力应变曲线显示PU支架的压缩模量和屈服强度由AUNPS(至少10次)显着提高。这是由于PU的硬链段的布置变化,这增加了聚合物的刚度。热重分析表明,降解发作温度随着AUNP的数量增加而上升。这些性质和特性表明,多孔纳米光/ PU支架是用于软组织植入物的合适材料。

著录项

  • 来源
    《ACS applied materials & interfaces》 |2018年第16期|共12页
  • 作者单位

    Univ Autonoma Chile Polymers &

    Macromol Ctr Inst Ciencias Quim Aplicadas Fac Ingn Llano Subercaseaux 2801 Santiago 8910060 Chile;

    Univ Santiago Dept Fis Av Ecuador 3493 Santiago 8320000 Chile;

    Univ Chile Adv Ctr Chron Dis ACCDiS Fac Ciencias Quim &

    Farmaceut Santos Dumont 964 Casilla 233 Santiago 8320000 Chile;

    Univ Chile Adv Ctr Chron Dis ACCDiS Fac Ciencias Quim &

    Farmaceut Santos Dumont 964 Casilla 233 Santiago 8320000 Chile;

    Univ Santiago Chile Fac Quim &

    Biol Dept Quim Mat Av LB OHiggins 3363 Casilla 40 Correo 33 Santiago 8320000 Chile;

    Univ Santiago Chile Fac Quim &

    Biol Dept Quim Mat Av LB OHiggins 3363 Casilla 40 Correo 33 Santiago 8320000 Chile;

    Univ Chile Fac Ciencias Dept Quim Palmeras 3425 Casilla 653 Santiago 8320000 Chile;

    Univ Chile Fac Ciencias Dept Quim Palmeras 3425 Casilla 653 Santiago 8320000 Chile;

    Univ Santiago Dept Fis Av Ecuador 3493 Santiago 8320000 Chile;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    biomaterials; porous scaffolds; gold nanoparticles; antibiofilm; non-cytotoxic; mechanical properties;

    机译:生物材料;多孔支架;金纳米颗粒;抗体;非细胞毒性;机械性能;

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