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@article{2352178,
author = {Sevriugina, Veronika and Pavliňák, David and Ondreáš, František and Jašek, Ondřej and Štaffová, Martina and Lepcio, Petr},
article_number = {48},
doi = {http://dx.doi.org/10.1021/acsomega.3c05683},
keywords = {3D printing; carbon nanomaterials; photopolymerization; percolation threshold},
language = {eng},
issn = {2470-1343},
journal = {ACS Omega},
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},
url = {https://doi.org/10.1021/acsomega.3c05683},
volume = {8},
year = {2023}
}
TY - JOUR
ID - 2352178
AU - Sevriugina, Veronika - Pavliňák, David - Ondreáš, František - Jašek, Ondřej - Štaffová, Martina - Lepcio, Petr
PY - 2023
TI - 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
JF - ACS Omega
VL - 8
IS - 48
SP - 45566-45577
EP - 45566-45577
PB - American Chemical Society
SN - 24701343
KW - 3D printing
KW - carbon nanomaterials
KW - photopolymerization
KW - percolation threshold
UR - https://doi.org/10.1021/acsomega.3c05683
N2 - 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.
ER -
SEVRIUGINA, Veronika, David PAVLIŇÁK, František ONDREÁŠ, Ondřej JAŠEK, Martina ŠTAFFOVÁ a Petr LEPCIO. 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. \textit{ACS Omega}. American Chemical Society, 2023, roč.~8, č.~48, s.~45566-45577. ISSN~2470-1343. Dostupné z: https://dx.doi.org/10.1021/acsomega.3c05683.
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