Publication detail

Matching Low Viscosity with Enhanced Conductivity in Vat Photopolymerization 3D Printing: Disparity in the Electric and Rheological Percolation Thresholds of Carbon-Based Nanofillers Is Controlled by the Matrix Type and Filler Dispersion

SEVRIUGINA, V. PAVLIŇÁK, D. ONDREÁŠ, F. JAŠEK, O. ŠTAFFOVÁ, M. LEPCIO, P.

Original Title

Matching Low Viscosity with Enhanced Conductivity in Vat Photopolymerization 3D Printing: Disparity in the Electric and Rheological Percolation Thresholds of Carbon-Based Nanofillers Is Controlled by the Matrix Type and Filler Dispersion

Type

journal article in Web of Science

Language

English

Original Abstract

This study investigated the impact of carbonaceous fillers (carbon black, multiwalled carbon nanotubes, graphene, and highly defective graphene) on aromatic and nonaromatic photopolymer resins' properties, such as viscosity, long-term stability, complex permittivity, curing efficiency, final conversion, storage modulus, heat deflection and glass transition temperatures, network density, and DC resistivity. The presented results also highlight challenges that must be addressed in designing and processing carbonaceous filler-based 3D-printed photopolymer resins. The improved dielectric and electrical properties were closely tied to the dispersion quality and filler-matrix affinity. It favored the enhanced dispersion of anisotropic fillers (nanotubes) in a compatible matrix above their percolation threshold. On the other hand, the dispersed filler worsens printability due to the elevated viscosity and deteriorated penetration depth. Nonetheless, electrical and rheological percolation was found at different filler concentrations. This window of despaired percolation combines highly enhanced conductivity with only mildly increased viscosity and good printability.

Keywords

MOLECULAR MOBILITY; NANOCOMPOSITES; SPECTROSCOPY; PARAMETERS; NANOTUBES

Authors

SEVRIUGINA, V.; PAVLIŇÁK, D.; ONDREÁŠ, F.; JAŠEK, O.; ŠTAFFOVÁ, M.; LEPCIO, P.

Released

25. 11. 2023

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

2470-1343

Periodical

ACS OMEGA

Year of study

8

Number

48

State

United States of America

Pages from

45566

Pages to

45577

Pages count

12

URL

https://pubs.acs.org/doi/10.1021/acsomega.3c05683

Full text in the Digital Library

http://hdl.handle.net/11012/245175

BibTex

@article{BUT187398,
  author="Veronika {Sevriugina} and David {Pavliňák} and František {Ondreáš} and Ondřej {Jašek} and Martina {Štaffová} and Petr {Lepcio}",
  title="Matching Low Viscosity with Enhanced Conductivity in Vat Photopolymerization 3D Printing: Disparity in the Electric and Rheological Percolation Thresholds of Carbon-Based Nanofillers Is Controlled by the Matrix Type and Filler Dispersion",
  journal="ACS OMEGA",
  year="2023",
  volume="8",
  number="48",
  pages="45566--45577",
  doi="10.1021/acsomega.3c05683",
  issn="2470-1343",
  url="https://pubs.acs.org/doi/10.1021/acsomega.3c05683"
}