Cargando…

Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory

In the present study, polylactic acid (PLA) enriched with carbonaceous particles like multi-walled carbon nanotubes (MWCNTs), graphene nanoplates (GNPs) or a combination of both up 12 wt % of loading are used for producing 3D-printed specimens with fused deposition modeling (FDM) technology which ar...

Descripción completa

Detalles Bibliográficos
Autores principales: Spinelli, Giovanni, Kotsilkova, Rumiana, Ivanov, Evgeni, Georgiev, Vladimir, Ivanova, Radost, Naddeo, Carlo, Romano, Vittorio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7589741/
https://www.ncbi.nlm.nih.gov/pubmed/33092115
http://dx.doi.org/10.3390/polym12102414
_version_ 1783600648734900224
author Spinelli, Giovanni
Kotsilkova, Rumiana
Ivanov, Evgeni
Georgiev, Vladimir
Ivanova, Radost
Naddeo, Carlo
Romano, Vittorio
author_facet Spinelli, Giovanni
Kotsilkova, Rumiana
Ivanov, Evgeni
Georgiev, Vladimir
Ivanova, Radost
Naddeo, Carlo
Romano, Vittorio
author_sort Spinelli, Giovanni
collection PubMed
description In the present study, polylactic acid (PLA) enriched with carbonaceous particles like multi-walled carbon nanotubes (MWCNTs), graphene nanoplates (GNPs) or a combination of both up 12 wt % of loading are used for producing 3D-printed specimens with fused deposition modeling (FDM) technology which are then experimentally and theoretically investigated. The goal is to propose a non-conventional filaments indicated for additive manufacturing process with improved dielectric and thermal properties, compared to the performances exhibited by the unfilled polymer. In the light of the above, a wide dielectric spectroscopy and a thermal analysis, supported by a morphological investigation, are performed. The results highlight that the introduction of 1-dimensional filler (MWCNTs) are more suitable for improving the dielectric properties of the resulting materials, due to the enhancement of the interfacial polarization and the presence of functionalized groups, whereas 2-dimensional nanoparticles (GNPs) better favor the thermal conduction mechanisms thanks to the lower thermal boundary resistance between the two phases, polymer/filler. In particular, with a loading of 12 wt % of MWCNTs the relative permittivity reaches the value of 5.35 × 10(3) much greater than that of 3.7 measured for unfilled PLA while for the thermal conductivity the enhancement with 12 wt % of GNPs is about 261% respect the thermal behavior of the neat polymer. The experimental results are correlated to theoretical findings, whereas a design of experiment (DoE) approach is adopted for investigating how the different fillers influence the dielectric and thermal performances of the 3D-printed parts, thus assisting the design of such innovative materials that appear promising for development and applications in the electromagnetic (EM) field and heat transfer.
format Online
Article
Text
id pubmed-7589741
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-75897412020-10-29 Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory Spinelli, Giovanni Kotsilkova, Rumiana Ivanov, Evgeni Georgiev, Vladimir Ivanova, Radost Naddeo, Carlo Romano, Vittorio Polymers (Basel) Article In the present study, polylactic acid (PLA) enriched with carbonaceous particles like multi-walled carbon nanotubes (MWCNTs), graphene nanoplates (GNPs) or a combination of both up 12 wt % of loading are used for producing 3D-printed specimens with fused deposition modeling (FDM) technology which are then experimentally and theoretically investigated. The goal is to propose a non-conventional filaments indicated for additive manufacturing process with improved dielectric and thermal properties, compared to the performances exhibited by the unfilled polymer. In the light of the above, a wide dielectric spectroscopy and a thermal analysis, supported by a morphological investigation, are performed. The results highlight that the introduction of 1-dimensional filler (MWCNTs) are more suitable for improving the dielectric properties of the resulting materials, due to the enhancement of the interfacial polarization and the presence of functionalized groups, whereas 2-dimensional nanoparticles (GNPs) better favor the thermal conduction mechanisms thanks to the lower thermal boundary resistance between the two phases, polymer/filler. In particular, with a loading of 12 wt % of MWCNTs the relative permittivity reaches the value of 5.35 × 10(3) much greater than that of 3.7 measured for unfilled PLA while for the thermal conductivity the enhancement with 12 wt % of GNPs is about 261% respect the thermal behavior of the neat polymer. The experimental results are correlated to theoretical findings, whereas a design of experiment (DoE) approach is adopted for investigating how the different fillers influence the dielectric and thermal performances of the 3D-printed parts, thus assisting the design of such innovative materials that appear promising for development and applications in the electromagnetic (EM) field and heat transfer. MDPI 2020-10-20 /pmc/articles/PMC7589741/ /pubmed/33092115 http://dx.doi.org/10.3390/polym12102414 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Spinelli, Giovanni
Kotsilkova, Rumiana
Ivanov, Evgeni
Georgiev, Vladimir
Ivanova, Radost
Naddeo, Carlo
Romano, Vittorio
Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title_full Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title_fullStr Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title_full_unstemmed Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title_short Dielectric Spectroscopy and Thermal Properties of Poly(lactic) Acid Reinforced with Carbon-Based Particles: Experimental Study and Design Theory
title_sort dielectric spectroscopy and thermal properties of poly(lactic) acid reinforced with carbon-based particles: experimental study and design theory
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7589741/
https://www.ncbi.nlm.nih.gov/pubmed/33092115
http://dx.doi.org/10.3390/polym12102414
work_keys_str_mv AT spinelligiovanni dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT kotsilkovarumiana dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT ivanovevgeni dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT georgievvladimir dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT ivanovaradost dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT naddeocarlo dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory
AT romanovittorio dielectricspectroscopyandthermalpropertiesofpolylacticacidreinforcedwithcarbonbasedparticlesexperimentalstudyanddesigntheory