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The Use of POSS-Based Nanoadditives for Cable-Grade PVC: Effects on Its Thermal Stability

1
Dipartimento di Scienze ed Innovazione Tecnologica (DiSIT), Università del Piemonte Orientale, Viale T. Michel, 11, 15121 Alessandria (I), Italy
2
Nova Res S.r.l., Via D. Bello, 3, 28100 Novara (I), Italy
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(7), 1105; https://doi.org/10.3390/polym11071105
Received: 28 May 2019 / Revised: 21 June 2019 / Accepted: 25 June 2019 / Published: 29 June 2019
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Abstract

Plasticized–Poly(vinyl chloride) (P-PVC) for cables and insulation requires performances related to outdoor, indoor and submarine contexts and reduction of noxious release of HCl-containing fumes in case of thermal degradation or fire. Introducing suitable nanomaterials in polymer-based nanocomposites can be an answer to this clue. In this work, an industry-compliant cable-grade P-PVC formulation was added with nanostructured materials belonging to the family of Polyhedral Oligomeric Silsesquioxane (POSS). The effects of the nanomaterials, alone and in synergy with HCl scavenging agents as zeolites and hydrotalcites, on the thermal stability and HCl evolution of P-PVC were deeply investigated by thermogravimetric analysis and reference ASTM methods. Moreover, hardness and mechanical properties were studied in order to highlight the effects of these additives in the perspective of final industrial uses. The data demonstrated relevant improvements in the thermal stability of the samples added with nanomaterials, already with concentrations of POSS down to 0.31 phr and interesting additive effects of POSS with zeolites and hydrotalcites for HCl release reduction without losing mechanical performances. View Full-Text
Keywords: plasticized poly(vinyl chloride), PVC; cable application; nanocomposites; nanomaterials; thermal stability extrusion; POSS; hydrotalcites; zeolite X; HCl scavenging plasticized poly(vinyl chloride), PVC; cable application; nanocomposites; nanomaterials; thermal stability extrusion; POSS; hydrotalcites; zeolite X; HCl scavenging
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Palin, L.; Rombolà, G.; Milanesio, M.; Boccaleri, E. The Use of POSS-Based Nanoadditives for Cable-Grade PVC: Effects on Its Thermal Stability. Polymers 2019, 11, 1105.

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