...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS Macro Letters >Strength of Recluse Spider's Silk Originates from Nanofibrils
【24h】

Strength of Recluse Spider's Silk Originates from Nanofibrils

机译：Recluse蜘蛛丝的强度来自纳米纤维

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Spider silk exhibits a combination of outstanding tensile strength and extensibility unique among all synthetic and biogenic polymer fibers. It has thus generated great interest to understand protein-based high-toughness materials and inspired the design of similar synthetic materials. The unrivaled properties of silk fibers have been recognized to be intimately related to their hierarchical structure. However, in the absence of unambiguous experimental evidence, competing and incompatible structural models of natural silk fibers have been proposed, some of them including various types of fibrillar components. Here we show that the fibers of the recluse (Loxosceles) spider exhibit the typical tensile properties of a very good spider silk and are entirely composed of 20 nm diameter protein fibrils that are more than 1 mu m long. Based on these findings, we developed the most detailed structural model for any silk directly supported by experimental evidence. Our work suggests that all the key properties of a spider silk are implemented within a single nanofibril, and we have isolated and imaged such a nanofibril from a native spider silk fiber. The nanofibril breaking force was estimated to be approximate to 120 nN. Our work underlines the importance of nanofibrils and furthers the understanding of the structure-property relationships of silk, with wide-ranging implications for silk research and the design of silk-inspired high-performance materials.
机译：蜘蛛丝表现出突出的拉伸强度和所有合成和生物聚合物纤维中独一无二的伸展性的组合。因此，旨在了解基于蛋白质的高韧性材料并激发了类似的合成材料的设计。已经认识到丝纤维的无与伦比的性质与其层次结构密切相关。然而，在没有明确的实验证据的情况下，已经提出了天然丝纤维的竞争和不相容的结构模型，其中一些包括各种类型的纤维组分。在这里，我们表明嵌入式（溶层）蜘蛛的纤维表现出非常好的蜘蛛丝的典型拉伸性能，并且完全由20nm直径的蛋白原纤维组成，这些蛋白原纤维长度超过1μm。基于这些调查结果，我们开发了由实验证据直接支持的任何丝绸的最详细的结构模型。我们的作品表明，蜘蛛丝的所有关键特性都在单一纳米纤维内实现，并且我们已经从天然蜘蛛丝纤维中分离和成像这种纳米纤维。估计纳米纤维破碎力估计近120nn。我们的工作强调了纳米纤维的重要性，并传统了解丝绸结构性质关系，具有广泛的丝绸研究的影响和丝绸启发高性能材料的设计。

著录项

  • 来源
    《ACS Macro Letters》 |2018年第11期|共13页
  • 作者

    Wang Qijue; Schniepp Hannes C.;

  • 作者单位

    Coll William &

    Mary Dept Appl Sci POB 8795 Williamsburg VA 23187 USA;

    Coll William &

    Mary Dept Appl Sci POB 8795 Williamsburg VA 23187 USA;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号