Effect of Recombinant Spidroins Self-Assembly on Rheological Behavior of Their Dispersions and Structure of Electrospun Nanofibrous Materials

Author:

Tenchurin Timur Kh.1,Sharikov Roman V.1,Belousov Sergei I.1,Streltsov Dmitry R.12ORCID,Malakhov Sergey N.1ORCID,Yastremsky Evgeny V.3ORCID,Chesnokov Yuri M.1,Davydova Lyubov I.1,Bogush Vladimir G.1,Chvalun Sergei N.12

Affiliation:

1. National Research Center “Kurchatov Institute”, 123182 Moscow, Russia

2. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia

3. Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences, 119333 Moscow, Russia

Abstract

The effect of primary amino acid sequence in recombinant spidroins on their spatial organization is crucial for the fabrication of artificial fibers and fibrous materials. This study focuses on the rheological properties of aqueous and alcoholic solutions of recombinant analogs of natural spidroins (rS1/9 and rS2/12), as well as the structure of their films and nanofibrous materials. Non-Newtonian flow behavior of aqueous solutions of these proteins was observed at certain concentrations in contrast to their solutions in hexafluoroisopropanol. The secondary structure of recombinant spidroins was addressed by IR spectroscopy, whereas their self-organization in various solvents was studied by AFM and cryo-TEM. The influence of the solvent on the structure and properties of the films and nanofibrous materials produced by electrospinning has been established.

Funder

Russian Foundation for Basic Research

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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