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Structure-Function Relationship of Artificial Spider Silk Fibers Produced by Straining Flow Spinning

机译：防拉动流动纺纱生产人造蜘蛛丝纤维的结构 - 功能关系

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摘要

The production of large quantities of artificial spider silk fibers that match the mechanical properties of the native material has turned out to be challenging. Recent advancements in the field make biomimetic spinning approaches an attractive way forward since they allow the spider silk proteins to assemble into the secondary, tertiary, and quaternary structures that are characteristic of the native silk fiber. Straining flow spinning (SFS) is a newly developed and versatile method that allows production under a wide range of processing conditions. Here, we use a recombinant spider silk protein that shows unprecedented water solubility and that is capable of native-like assembly, and we spin it into fibers by the SFS technique. We show that fibers may be spun using different hydrodynamical and chemical conditions and conclude that these spinning conditions affect fiber mechanics. In particular, it was found that the addition of acetonitrile and polyethylene glycol to the collection bath results in fibers with increased beta-sheet content and improved mechanical properties.
机译：匹配本地材料的机械性能的大量人造蜘蛛丝纤维的生产已经挑战。该领域的最新进展使仿生纺丝成为一种有吸引力的方式，因为它们允许蜘蛛丝蛋白组装成具有原生丝纤维的特征的二级，三级和四元结构。突击流动纺丝（SFS）是一种新开发和多功能的方法，可在各种加工条件下生产。在这里，我们使用重组蜘蛛丝蛋白，其显示出前所未有的水溶解度，并且能够通过SFS技术将其旋入纤维中。我们表明纤维可以使用不同的流体动力学和化学条件来纺丝，并得出结论，这些纺纱条件会影响纤维力学。特别地，发现将乙腈和聚乙二醇加入收集浴中导致纤维具有增加的β-片状含量和改善的机械性能。

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  • 来源
    《Biomacromolecules》 |2020年第6期|共9页
  • 作者

    Gonska Nathalie; Lopez Patricia A.; Lozano-Picazo Paloma; Thorpe Michael; Guinea Gustavo V; Johansson Jan; Barth Andreas; Perez-Rigueiro Jose; Rising Anna;

  • 作者单位

    Swedish Univ Agr Sci Ctr Vet Med &

    Anim Sci Dept Anat Physiol &

    Biochem S-75651 Uppsala Sweden;

    Univ Politecn Madrid Dept Ciencia Mat ETSI Caminos Canales &

    Puertos Madrid 28040 Spain;

    Univ Politecn Madrid Dept Ciencia Mat ETSI Caminos Canales &

    Puertos Madrid 28040 Spain;

    Swedish Univ Agr Sci Ctr Vet Med &

    Anim Sci Dept Anat Physiol &

    Biochem S-75651 Uppsala Sweden;

    Univ Politecn Madrid Dept Ciencia Mat ETSI Caminos Canales &

    Puertos Madrid 28040 Spain;

    Karolinska Inst NEO Div Neurogeriatr Dept Neurobiol Care Sci &

    Soc NVS S-14183 Huddinge Sweden;

    Stockholm Univ Dept Biochem &

    Biophys Arrhenius Labs Nat Sci S-10691 Stockholm Sweden;

    Univ Politecn Madrid Dept Ciencia Mat ETSI Caminos Canales &

    Puertos Madrid 28040 Spain;

    Swedish Univ Agr Sci Ctr Vet Med &

    Anim Sci Dept Anat Physiol &

    Biochem S-75651 Uppsala Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分子生物学;
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