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Stretchable, Bio-Compatible, Antioxidant and Self-Powering Adhesives from Soluble Silk Fibroin and Vegetal Polyphenols Exfoliated Graphite

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Civil & Environmental Engineering Department, Università degli Studi di Perugia and INSTM Research Unit, Strada di Pentima 4, 05100 Terni, Italy
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Department of Pharmaceutical Sciences, University of Perugia, 06123 Perugia, Italy
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Department of Polymeric Nanomaterials and Biomaterials, Institute of Polymer Science and Technology, ICTP-CSIC, 28006 Madrid, Spain
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Department of Land Environment Agriculture and Forestry, University of Padua, 35020 Legnaro, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Suming Li
Nanomaterials 2021, 11(9), 2352; https://doi.org/10.3390/nano11092352
Received: 30 July 2021 / Revised: 1 September 2021 / Accepted: 6 September 2021 / Published: 10 September 2021
(This article belongs to the Special Issue New Insights in Nanotechnology for Regenerative Medicine)
The development of bio-glues is still a challenging task, regarding adhesion on wet surfaces; often, high performance and adaption to complex geometries need to be combined in one material. Here, we report biocompatible adhesives obtained by blending regenerated silk (RS) with a soluble plant-derived polyphenol (i.e., chestnut tannin) that was also used to exfoliate graphite to obtain graphene-based RS/tannin (G-RS/T) composites. The resultant G-RS/T hybrid material exhibited outstanding stretchability (i.e., 400%) and high shear strength (i.e., 180 kPa), superior to that of commercial bio-glues, and showed sealant properties for tissue approximation. Moreover, we showed how such nanocomposites exhibit electromechanical properties that could potentially be used for the realization of green and eco-friendly piezoelectric devices. Finally, we demonstrate the in vitro glue’s biocompatibility and anti-oxidant properties that enable their utilization in clinical applications. View Full-Text
Keywords: regenerated silk; exfoliated graphite; tannin extracts; mechanical properties; adhesion; biocompatibility regenerated silk; exfoliated graphite; tannin extracts; mechanical properties; adhesion; biocompatibility
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MDPI and ACS Style

Valentini, L.; Ceccarini, M.R.; Verdejo, R.; Tondi, G.; Beccari, T. Stretchable, Bio-Compatible, Antioxidant and Self-Powering Adhesives from Soluble Silk Fibroin and Vegetal Polyphenols Exfoliated Graphite. Nanomaterials 2021, 11, 2352. https://doi.org/10.3390/nano11092352

AMA Style

Valentini L, Ceccarini MR, Verdejo R, Tondi G, Beccari T. Stretchable, Bio-Compatible, Antioxidant and Self-Powering Adhesives from Soluble Silk Fibroin and Vegetal Polyphenols Exfoliated Graphite. Nanomaterials. 2021; 11(9):2352. https://doi.org/10.3390/nano11092352

Chicago/Turabian Style

Valentini, Luca, Maria Rachele Ceccarini, Raquel Verdejo, Gianluca Tondi, and Tommaso Beccari. 2021. "Stretchable, Bio-Compatible, Antioxidant and Self-Powering Adhesives from Soluble Silk Fibroin and Vegetal Polyphenols Exfoliated Graphite" Nanomaterials 11, no. 9: 2352. https://doi.org/10.3390/nano11092352

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