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Eco-Friendly Alternatives to Toluene-Based 2D Inks for Inkjet and Electrohydrodynamic Jet Printing Processes: A

Pedro C Rijo^1,2, Ilaria Tocci^3,4, Francisco J Galindo-Rosales^2,5

¹CEFT-Transport Phenomena Research Center, Mechanical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.

|March 6, 2025

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This summary is machine-generated.

This study shows cyrene, a green solvent, effectively disperses 2D materials like graphene. Cyrene-based inks are promising eco-friendly options for advanced inkjet printing technologies.

Area of Science:

Materials Science
Green Chemistry

Background:

Petroleum-derived solvents pose environmental concerns.
Graphene nanoplatelets (GNPs), hexagonal boron nitride (hBN), and molybdenum disulfide (MoS2) are 2D materials with unique properties.
Sustainable solvents are sought as alternatives in material processing.

Purpose of the Study:

To evaluate cyrene as a green solvent for exfoliating 2D materials.
To investigate the rheological properties of 2D material suspensions in cyrene.
To assess the suitability of these inks for inkjet printing applications.

Main Methods:

Exfoliation of GNPs, hBN, and MoS2 in cyrene.
Rheological characterization of suspensions with and without polyvinylpyrrolidone (PVP).
Estimation of droplet sizes for drop-on-demand (DoD) and electrohydrodynamic (EHD) inkjet printing.

Keywords:

2D particles printing processes rheology

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Main Results:

Cyrene effectively exfoliates GNPs, hBN, and MoS2.
PVP addition stabilizes viscosity in GNP and hBN suspensions.
Droplet size predictions show significant differences between DoD and EHD printing.

Conclusions:

Cyrene is a viable green solvent for 2D material processing.
Cyrene-based 2D inks offer eco-friendly alternatives for inkjet printing.
The study provides insights into fluid dynamics for advanced printing techniques.