Investigation of multi-walled carbon nanotubes aqueous dispersions via electrical impedance spectroscopy

The present article aims to set up the bases to implement a nanocomposite mortar applied in the Monuments of Cultural Heritage. The aqueous dispersion of carbon-based nanomaterials that will be inserted in the restoration binder was investigated in laboratory scale. Four different concentrations (ra...

Full description

Saved in:
Bibliographic Details
Published in:Materials today : proceedings 2023, Vol.93, p.779-784
Main Authors: Stogia, Maria-Evangelia, Dimou, Angeliki-Eirini, Maistros, George, Alexopoulos, Nikolaos D.
Format: Article
Language:English
Subjects:
Dispersion
Electrical Impedance Spectroscopy (EIS)
Multi-walled carbon nanotubes (ΜWCNTs)
Ultrasonication
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present article aims to set up the bases to implement a nanocomposite mortar applied in the Monuments of Cultural Heritage. The aqueous dispersion of carbon-based nanomaterials that will be inserted in the restoration binder was investigated in laboratory scale. Four different concentrations (ranging from 0.05 to 0.20 wt%) of commercially available multi-walled carbon nanotubes (ΜWCNTs) were investigated to produce their aqueous dispersions. The aqueous solutions were dispersed with the help of an ultrasonic probe and at the same time, their electrical properties were measured through Electrical Impedance Spectroscopy (EIS). It was shown that the concentration of MWCNTs approximate to 0.15 wt% of the binder exhibited the lowest impedance values and it is recommended to be ultrasonicated at approximately 40 to 60 kJ as more than 30 % decrease in the impedance values were recorded.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2023.07.040