Sensitive electromechanical sensors using viscoelastic graphene-polymer nanocomposites
Trinity College Dublin · University of Manchester · +1 more institution
Abstract
Despite its widespread use in nanocomposites, the effect of embedding graphene in highly viscoelastic polymer matrices is not well understood. We added graphene to a lightly cross-linked polysilicone, often encountered as Silly Putty, changing its electromechanical properties substantially. The resulting nanocomposites display unusual electromechanical behavior, such as postdeformation temporal relaxation of electrical resistance and nonmonotonic changes in resistivity with strain. These phenomena are associated with the mobility of the nanosheets in the low-viscosity polymer matrix. By considering both the connectivity and mobility of the nanosheets, we developed a quantitative model that completely describes…
Citation impact
- FWCI
- 64.03
- Percentile
- 100%
- References
- 76
Authors
12Topics & keywords
- Composite material
- Materials science
- Graphene
- Viscoelasticity
- Toughness
- Nanocomposite
- Polymer
- Composite number