Polycarbonate (PC), a thermoplastic polymer with excellent properties, is used in many advanced technological applications. When PC is blended with other polymers or additives, new properties, such as electrical properties, can be available. In this study, carbon black (CB) was melt-compounded with PC to produce polymer compounds with compositions (10–16 wt.% of CB), which are close to or above the electrical percolation threshold (13.5–14 wt.% of CB). Effects due to nanofiller dispersion/aggregation in the polymer matrix, together with phase composition, glass transition temperature, morphology and textural properties, were studied by using thermal analysis methods (thermogravimetry and differential scanning calorimetry) and scanning electron microscopy. The DC electrical properties of these materials were also investigated by means of electrical conductivity measurements and correlated with the “structure” of the CB, to better explain the behaviour of the composites close to the percolation threshold.

Thermal/electrical properties and texture of carbon black pc polymer composites near the electrical percolation threshold

Brunella V.
First
;
Rossatto B. G.;Mastropasqua C.;Cesano F.
;
Scarano D.
Last
2021-01-01

Abstract

Polycarbonate (PC), a thermoplastic polymer with excellent properties, is used in many advanced technological applications. When PC is blended with other polymers or additives, new properties, such as electrical properties, can be available. In this study, carbon black (CB) was melt-compounded with PC to produce polymer compounds with compositions (10–16 wt.% of CB), which are close to or above the electrical percolation threshold (13.5–14 wt.% of CB). Effects due to nanofiller dispersion/aggregation in the polymer matrix, together with phase composition, glass transition temperature, morphology and textural properties, were studied by using thermal analysis methods (thermogravimetry and differential scanning calorimetry) and scanning electron microscopy. The DC electrical properties of these materials were also investigated by means of electrical conductivity measurements and correlated with the “structure” of the CB, to better explain the behaviour of the composites close to the percolation threshold.
2021
Inglese
Esperti anonimi
5
8
212(1)
212(14)
14
https://www.mdpi.com/2504-477X/5/8/212
Carbon black; Differential scanning calorimetry; Electrical conductivity; Polycarbonate; Polymer composites; Scanning electron microscopy; Thermal and electrical properties; Thermogravimetric analysis
no
1 – prodotto con file in versione Open Access (allegherò il file al passo 6 - Carica)
262
5
Brunella V.; Rossatto B.G.; Mastropasqua C.; Cesano F.; Scarano D.
info:eu-repo/semantics/article
open
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1805185
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