Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Mini-Spidroin Filamentation in Different Methanol Concentration Coagulation Bath

Version 1 : Received: 22 October 2022 / Approved: 24 October 2022 / Online: 24 October 2022 (07:14:38 CEST)

How to cite: Zhang, J.; Gong, M.X.; Jia, Q.P.; Meng, Q. Mini-Spidroin Filamentation in Different Methanol Concentration Coagulation Bath. Preprints 2022, 2022100354. https://doi.org/10.20944/preprints202210.0354.v1 Zhang, J.; Gong, M.X.; Jia, Q.P.; Meng, Q. Mini-Spidroin Filamentation in Different Methanol Concentration Coagulation Bath. Preprints 2022, 2022100354. https://doi.org/10.20944/preprints202210.0354.v1

Abstract

Spider silk has excellent strength and elasticity in natural, researchers have been working for decades try to achieve natural spider silk outstanding mechanical properties using recombinant spider silk protein (spidroin) through artificial spinning. In this work, we chose wet spinning method to explore the relationship between concentration of coagulation bath and fiber performance. It was found that the concentration of methanol has important effect on fiber continuity, diameter and mechanical properties. Lower concentration favors spinning continuous thinner, fibers with high strain. Secondary stretching benefits spinning silk fibers with stable mechanical properties, and thermal stability. Through applying different methanol concentration and additional stretching, we obtained silk fibers with Young’s modulus of 3.052± 2.626 GPa, stress of 25.3944 ± 17.48 MPa, and strain of 140 ± 95.4%.

Keywords

Spidroin; wet spinning; methanol

Subject

Chemistry and Materials Science, Biomaterials

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