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.

Volume Resistivity

Ag Functionalized Graphene

Conductive Adhesive

Green Synthesis

Författare

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 (MC2), Elektronikmaterial och system

Paolo Ciambelli

Universita degli Studi di Salerno

Journal of Nanoscience and Nanotechnology

1533-4880 (ISSN)

Vol. 18 2 1176-1185

Ämneskategorier

Oorganisk kemi

Materialkemi

Annan kemi

DOI

10.1166/jnn.2018.15256

Mer information

Senast uppdaterat

2018-04-05