Conductive adhesive based on mussel-inspired graphene decoration with silver nanoparticles
Artikel i vetenskaplig tidskrift, 2018

Decoration with silver nanoparticles was obtained by coating graphene with a polydopamine layer, able to induce spontaneous metallic nanoparticles formation without any specific chemical interfacial modifier, neither using complex instrumentation. The choice of dopamine was inspired by the composition of adhesive proteins in mussels, related to their robust attach to solid surfaces. The synthesis procedure started from graphite and involved eco-friendly compounds, such as Vitamin C and glucose as reducing agent and water as reaction medium. Silver decorated graphene was inserted as secondary nanofiller in the formulation of a reference conductive adhesive based on epoxy resin and silver flakes. A wide characterization of the intermediate materials obtained along the step procedure for the adhesive preparation was carried out by several techniques. We have found that the presence of nanofiller yields, in addition to an improvement of the thermal conductivity (up to 7.6 W/m· K), a dramatic enhancement of the electrical conductivity of the adhesive. In particular, starting from 3 · 10 2 S/cm of the reference adhesive, we obtained a value of 4 · 10 4 S/cm at a nanofiller concentration of 11.5 wt%. The combined double filler conductivity was evaluated by Zallen’s model. The effect of the temperature on the resistivity of the adhesive has been also studied.

Green Synthesis

Volume Resistivity

Conductive Adhesive

Ag Functionalized Graphene


Marcello Casa

Universita degli Studi di Salerno

Maria Sarno

Universita degli Studi di Salerno

Rosalba Liguori

Universita degli Studi di Salerno

Claudia Cirillo

Universita degli Studi di Salerno

Alfredo Rubino

Universita degli Studi di Salerno

Emanuele Bezzeccheri

Universita degli Studi di Salerno

Johan Liu

Chalmers, Mikroteknologi och nanovetenskap, Elektronikmaterial

Paolo Ciambelli

Universita degli Studi di Salerno

Journal of Nanoscience and Nanotechnology

1533-4880 (ISSN)

Vol. 18 2 1176-1185


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