Hydrothermal Effect on Mechanical Properties of Spidroin.

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ID: 106563
2020
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Abstract
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 with a high β-sheet content and an adequate tensile strength was utilized as the study material, while that from 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.
Reference Key
wu2020hydrothermalpolymers Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wu, Hsuan-Chen;Pandey, Aditi;Chang, Liang-Yu;Hsu, Chieh-Yun;Yang, Thomas Chung-Kuang;Tso, I-Min;Sheu, Hwo-Shuenn;Yang, Jen-Chang;
Journal Polymers
Year 2020
DOI
E1013
URL
Keywords
strength spider silk secondary structures nephila pilipes hydrothermal treatment

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