Jump to main content
Jump to site search


Conductive Regenerated Silk Fibroin-Based Hydrogels with High Strength and Toughness

Abstract

Regenerated silk fibroin hydrogels (RSF gels) are extensively investigated in the biomedical fields. However, the mechanical properties of RSF hydrogels are often weak or brittle, which greatly limit their applications in high strength demanded fields. Herein, strong and tough RSF-based hydrogels with large extensibility and rapid self-recovery property were developed via double network (DN) concept. RSF/HPAAm DN gels, consisting of physical RSF/SDS gel as the first network and physically cross-linked HPAAm as the second network, are fully physical network structures. At optimal condition, RSF/HPAAm DN gel exhibited integrated high mechanical properties, including high compressive strength (122 MPa), high tensile strength (σf of 1.17 MPa), large extensibility (εf of 19.03 mm/mm), high toughness (W of 11.75 MJ/m3 and T of 1769 J/m2) and rapid self-recovery (61 % toughness recovery after 1 min resting at temperature). Interestingly, owing to contain sodium dodecyl sulfate (SDS) and NaCl, RSF/HPAAm DN gels also displayed ionic conductivity, which could be used as strain sensor, touch screen pen and electronic skin. We believe the design strategy as well as our RSF/HPAAm DN gel will provide a new opinion for achieving high performance RSF-based gels with new functionalities.

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Sep 2018, accepted on 07 Nov 2018 and first published on 08 Nov 2018


Article type: Paper
DOI: 10.1039/C8TB02445F
Citation: J. Mater. Chem. B, 2018, Accepted Manuscript
  •   Request permissions

    Conductive Regenerated Silk Fibroin-Based Hydrogels with High Strength and Toughness

    F. Chen, S. Lu, L. Zhu, Q. Wang, Z. Tang, G. Qin, J. Yang, G. Sun, Q. Zhang and Q. Chen, J. Mater. Chem. B, 2018, Accepted Manuscript , DOI: 10.1039/C8TB02445F

Search articles by author

Spotlight

Advertisements