Gelatin-Graphene Nanocomposites with Ultralow Electrical Percolation Threshold

Hoda Nassira; Antoni Sánchez-Ferrer; Jozef Adamcik; Stephan Handschin; Hossein Mahdavi; Nader Taheri Qazvini; Raffaele Mezzenga

doi:10.1002/adma.201601115

Gelatin-Graphene Nanocomposites with Ultralow Electrical Percolation Threshold

Adv Mater. 2016 Aug;28(32):6914-20. doi: 10.1002/adma.201601115. Epub 2016 Jun 1.

Authors

Hoda Nassira^{1

2}, Antoni Sánchez-Ferrer¹, Jozef Adamcik¹, Stephan Handschin¹, Hossein Mahdavi², Nader Taheri Qazvini^{2

3}, Raffaele Mezzenga¹

Affiliations

¹ ETH Zurich, Department of Health Sciences and Technology, Food and Soft Materials Science, IFNH, Schmelzbergstrasse 9, 8092, Zürich, Switzerland.
² Polymer Division, School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
³ Institute for Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA.

PMID: 27247052
DOI: 10.1002/adma.201601115

Abstract

Gelatin-graphene conductive biopolymer nanocomposites (CPCs) with ultralow percolation threshold are designed by reducing in situ graphene oxide nanosheets with ascorbic acid and suppressing the aggregation of the graphene nanosheets. The resulting conductive nanocomposites show a record-low electrical percolation threshold of 3.3 × 10(-2) vol%, which arises from the homogeneous dispersion of the graphene nanosheets within the gelatin matrix.

Keywords: electrical conductivity; gelatin; graphene; humidity-sensitivity; network.