Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 35, 2017
Previous Article Next Article

Artificial hagfish protein fibers with ultra-high and tunable stiffness

Author affiliations

Abstract

Stiff fibers are used as reinforcing phases in a wide range of high-performance composite materials. Silk is one of the most widely studied bio-fibers, but alternative materials with specific advantages are also being explored. Among these, native hagfish (Eptatretus stoutii) slime thread is an attractive protein-based polymer. These threads consist of coiled-coil intermediate filaments (IFs) as nano-scale building blocks, which can be transformed into extended β-sheet-containing chains upon draw-processing, resulting in fibers with impressive mechanical performance. Here, we report artificial hagfish threads produced by recombinant protein expression, which were subsequently self-assembled into coiled-coil nanofilaments, concentrated, and processed into β-sheet-rich fibers by a “picking-up” method. These artificial fibers experienced mechanical performance enhancement during draw-processing. We exploited the lysine content to covalently cross-link the draw-processed fibers and obtained moduli values (E) in tension as high as ∼20 GPa, which is stiffer than most reported artificial proteinaceous materials.

Graphical abstract: Artificial hagfish protein fibers with ultra-high and tunable stiffness

Back to tab navigation

Supplementary files

Article information


Submitted
10 Apr 2017
Accepted
07 Aug 2017
First published
09 Aug 2017

Nanoscale, 2017,9, 12908-12915
Article type
Paper

Artificial hagfish protein fibers with ultra-high and tunable stiffness

J. Fu, P. A. Guerette, A. Pavesi, N. Horbelt, C. T. Lim, M. J. Harrington and A. Miserez, Nanoscale, 2017, 9, 12908
DOI: 10.1039/C7NR02527K

Social activity

Search articles by author

Spotlight

Advertisements