Hydrothermal effect on mechanical properties of Nephila pilipes spidroin

Hsuan Chen Wu, Aditi Pandey, Liang Yu Chang, Chieh Yun Hsu, Thomas Chung Kuang Yang, I. Min Tso, Hwo Shuenn Sheu, Jen Chang Yang

研究成果: 雜誌貢獻文章

摘要

The superlative mechanical properties of spider silk and its conspicuous variations have instigated significant interest over the past few years. However, current attempts to synthetically spin spider silk fibers often yield an inferior physical performance, owing to the improper molecular interactions of silk proteins. Considering this, herein, a post-treatment process to reorganize molecular structures and improve the physical strength of spider silk is reported. The major ampullate dragline silk from Nephila pilipes with a high β-sheet content and an adequate tensile strength was utilized as the study material, while that from Cyrtophora moluccensis was regarded as a reference. Our results indicated that the hydrothermal post-treatment (50-70 °C) of natural spider silk could effectively induce the alternation of secondary structures (random coil to β-sheet) and increase the overall tensile strength of the silk. Such advantageous post-treatment strategy when applied to regenerated spider silk also leads to an increment in the strength by ~2.5-3.0 folds, recapitulating ~90% of the strength of native spider silk. Overall, this study provides a facile and effective post-spinning means for enhancing the molecular structures and mechanical properties of as-spun silk threads, both natural and regenerated.

原文英語
文章編號1013
期刊Polymers
12
發行號5
DOIs
出版狀態已發佈 - 五月 1 2020

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

指紋 深入研究「Hydrothermal effect on mechanical properties of Nephila pilipes spidroin」主題。共同形成了獨特的指紋。

  • 引用此

    Wu, H. C., Pandey, A., Chang, L. Y., Hsu, C. Y., Yang, T. C. K., Tso, I. M., Sheu, H. S., & Yang, J. C. (2020). Hydrothermal effect on mechanical properties of Nephila pilipes spidroin. Polymers, 12(5), [1013]. https://doi.org/10.3390/POLYM12051013