Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites

Polyamide 66 (PA66) is a well-known engineering thermoplastic polymer, primarily employed in polymer composites with fillers and additives of different nature and dimensionality (1D, 2D and 3D) used as alternatives to metals in various technological applications. In this work, carbon black (CB), a c...

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Autores principales:	Valentina Brunella, Beatrice Gaia Rossatto, Domenica Scarano, Federico Cesano
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	carbon black polymer composites polyamide 66 thermal and electrical properties differential scanning calorimetry scanning electron microscopy Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/4cc6378dc1ba4570bcdfa51213e16976
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spelling	oai:doaj.org-article:4cc6378dc1ba4570bcdfa51213e169762021-11-25T18:32:28ZThermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites10.3390/nano111131032079-4991https://doaj.org/article/4cc6378dc1ba4570bcdfa51213e169762021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3103https://doaj.org/toc/2079-4991Polyamide 66 (PA66) is a well-known engineering thermoplastic polymer, primarily employed in polymer composites with fillers and additives of different nature and dimensionality (1D, 2D and 3D) used as alternatives to metals in various technological applications. In this work, carbon black (CB), a conductive nanofiller, was used to reinforce the PA66 polymer in the 9–27 wt. % CB loading range. The reason for choosing CB was intrinsically associated with its nature: a nanostructured carbon filler, whose agglomeration characteristics affect the electrical properties of the polymer composites. Crystallinity, phase composition, thermal behaviour, morphology, microstructure, and electrical conductivity, which are all properties engendered by nanofiller dispersion in the polymer, were investigated using thermal analyses (thermogravimetry and differential scanning calorimetry), microscopies (scanning electron and atomic force microscopies), and electrical conductivity measurements. Interestingly, direct current (DC) electrical measurements and conductive-AFM mapping through the samples enable visualization of the percolation paths and the ability of CB nanoparticles to form aggregates that work as conductive electrical pathways beyond the electrical percolation threshold. This finding provides the opportunities to investigate the degree of filler dispersion occurring during the transformation processes, while the results of the electrical properties also contribute to enabling the use of such conductive composites in sensor and device applications. In this regard, the results presented in this paper provide evidence that conductive carbon-filled polymer composites can work as touch sensors when they are connected with conventional low-power electronics and controlled by inexpensive and commercially available microcontrollers.Valentina BrunellaBeatrice Gaia RossattoDomenica ScaranoFederico CesanoMDPI AGarticlecarbon blackpolymer compositespolyamide 66thermal and electrical propertiesdifferential scanning calorimetryscanning electron microscopyChemistryQD1-999ENNanomaterials, Vol 11, Iss 3103, p 3103 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon black polymer composites polyamide 66 thermal and electrical properties differential scanning calorimetry scanning electron microscopy Chemistry QD1-999
spellingShingle	carbon black polymer composites polyamide 66 thermal and electrical properties differential scanning calorimetry scanning electron microscopy Chemistry QD1-999 Valentina Brunella Beatrice Gaia Rossatto Domenica Scarano Federico Cesano Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
description	Polyamide 66 (PA66) is a well-known engineering thermoplastic polymer, primarily employed in polymer composites with fillers and additives of different nature and dimensionality (1D, 2D and 3D) used as alternatives to metals in various technological applications. In this work, carbon black (CB), a conductive nanofiller, was used to reinforce the PA66 polymer in the 9–27 wt. % CB loading range. The reason for choosing CB was intrinsically associated with its nature: a nanostructured carbon filler, whose agglomeration characteristics affect the electrical properties of the polymer composites. Crystallinity, phase composition, thermal behaviour, morphology, microstructure, and electrical conductivity, which are all properties engendered by nanofiller dispersion in the polymer, were investigated using thermal analyses (thermogravimetry and differential scanning calorimetry), microscopies (scanning electron and atomic force microscopies), and electrical conductivity measurements. Interestingly, direct current (DC) electrical measurements and conductive-AFM mapping through the samples enable visualization of the percolation paths and the ability of CB nanoparticles to form aggregates that work as conductive electrical pathways beyond the electrical percolation threshold. This finding provides the opportunities to investigate the degree of filler dispersion occurring during the transformation processes, while the results of the electrical properties also contribute to enabling the use of such conductive composites in sensor and device applications. In this regard, the results presented in this paper provide evidence that conductive carbon-filled polymer composites can work as touch sensors when they are connected with conventional low-power electronics and controlled by inexpensive and commercially available microcontrollers.
format	article
author	Valentina Brunella Beatrice Gaia Rossatto Domenica Scarano Federico Cesano
author_facet	Valentina Brunella Beatrice Gaia Rossatto Domenica Scarano Federico Cesano
author_sort	Valentina Brunella
title	Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
title_short	Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
title_full	Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
title_fullStr	Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
title_full_unstemmed	Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites
title_sort	thermal, morphological, electrical properties and touch-sensor application of conductive carbon black-filled polyamide composites
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4cc6378dc1ba4570bcdfa51213e16976
work_keys_str_mv	AT valentinabrunella thermalmorphologicalelectricalpropertiesandtouchsensorapplicationofconductivecarbonblackfilledpolyamidecomposites AT beatricegaiarossatto thermalmorphologicalelectricalpropertiesandtouchsensorapplicationofconductivecarbonblackfilledpolyamidecomposites AT domenicascarano thermalmorphologicalelectricalpropertiesandtouchsensorapplicationofconductivecarbonblackfilledpolyamidecomposites AT federicocesano thermalmorphologicalelectricalpropertiesandtouchsensorapplicationofconductivecarbonblackfilledpolyamidecomposites
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Thermal, Morphological, Electrical Properties and Touch-Sensor Application of Conductive Carbon Black-Filled Polyamide Composites

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