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Materials 2017, 10(8), 943; https://doi.org/10.3390/ma10080943

Nano-Charged Polypropylene Application: Realistic Perspectives for Enhancing Durability

Department of Industrial Engineering University of Salerno Via Giovanni Paolo II, 132-84084 Fisciano (SA), Italy
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Received: 24 July 2017 / Revised: 7 August 2017 / Accepted: 8 August 2017 / Published: 14 August 2017
(This article belongs to the Special Issue Improving Performance of Nanocomposite Materials)
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Abstract

Isotactic polypropylene/multi-walled carbon nanotube (iPP/MWCNTs) films have been exposed to accelerated weathering in a UV device for increasing times. The effect of UV irradiation on the structural and chemical changes has been investigated. The resistance to accelerated photooxidation of (iPP/MWCNTs) films has been compared to the photooxidation behaviour of unfilled polypropylene films with the same structural organization. The chemical and structural modifications resulting from photooxidation have been followed using infrared spectroscopy, calorimetric and diffractometric analysis. MWCNTs embedded in the polymeric matrix are able to strongly contrast the degradation mechanisms and the structural and morphological rearrangements caused by the UV treatment on the unfilled polymer. MWCNTs determine an induction period (IP) before the increase of the carbonyl and hydroxyl groups. The extent of the IP is strictly correlated to the amount of MWCNTs. The low electrical percolation threshold (EPT) and the electrical conductivity of the nanocomposites, together with their excellent thermal and photooxidative stability, make them promising candidates to fulfill many industrial requirements. View Full-Text
Keywords: polymer durability; thermoplastic nanocomposites; nanocomposites photo-oxidation; carbon nanotubes polymer durability; thermoplastic nanocomposites; nanocomposites photo-oxidation; carbon nanotubes
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Naddeo, C.; Vertuccio, L.; Barra, G.; Guadagno, L. Nano-Charged Polypropylene Application: Realistic Perspectives for Enhancing Durability. Materials 2017, 10, 943.

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