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Collagen self-assembly in the presence of nano-carbons: A structure-property relationship

机译:纳米碳存在下胶原蛋白的自组装:结构-性质关系

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A gel-spinning approach was used to form collagen-based fibers with loadings of both single-wall carbon nanotubes (SWNT) and carbon nano-chips (CNC) (i.e., short few-wall carbon nanotubes). Upon formation the fibers were dried and tested to analyze the influence of the nano-carbons on collagen self-assembly. Wide-angle X-ray diffraction (WAXD) studies show that the presence of the nano-carbon does not hinder collagen fibril formation. However, based on small-angle X-ray scattering (SAXS) analysis, collagen alignment is influence by the type of nano-carbon, and also indicates that dispersion quality of the nano-carbons plays a role on fibril alignment. Mechanical properties of all fibers are upwards of 4 GPa for the Young's Modulus and 0.2 GPa for the ultimate tensile strength. The nano-carbons are also found to provide additional mechanical reinforcement to the collagen.
机译:使用凝胶纺丝方法形成具有单壁碳纳米管(SWNT)和碳纳米芯片(CNC)(即短的短壁碳纳米管)负载的胶原蛋白基纤维。形成后,将纤维干燥并测试以分析纳米碳对胶原蛋白自组装的影响。广角X射线衍射(WAXD)研究表明,纳米碳的存在不会阻碍胶原原纤维的形成。然而,基于小角度X射线散射(SAXS)分析,胶原蛋白的排列受到纳米碳类型的影响,并且还表明纳米碳的分散质量对原纤维排列有影响。对于杨氏模量,所有纤维的机械性能均高于4 GPa,对于极限拉伸强度,其机械性能均高于0.2 GPa。还发现纳米碳为胶原蛋白提供了额外的机械增强作用。

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