UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection
Epoxy based coatings are susceptible to ultra violet (UV) damage and their durability can be significantly reduced in outdoor environments. This paper highlights a relevant property of graphene-based nanoparticles: Graphene Nanoplatelets (GNPs) incorporated in an epoxy-based free-standing film deter...
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doaj-3a7f56f7dc034e008478d54c849475482020-11-25T01:56:26ZengMDPI AGMaterials1996-19442019-03-0112696210.3390/ma12060962ma12060962UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy DetectionLiberata Guadagno0Carlo Naddeo1Marialuigia Raimondo2Vito Speranza3Roberto Pantani4Annalisa Acquesta5Anna Carangelo6Tullio Monetta7Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, ItalyDepartment of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, ItalyDepartment of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, ItalyDepartment of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, ItalyDepartment of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Salerno, 84084 Fisciano, ItalyDepartment of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, ItalyDepartment of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, ItalyDepartment of Chemical Engineering, Materials and Industrial Production, University of Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, ItalyEpoxy based coatings are susceptible to ultra violet (UV) damage and their durability can be significantly reduced in outdoor environments. This paper highlights a relevant property of graphene-based nanoparticles: Graphene Nanoplatelets (GNPs) incorporated in an epoxy-based free-standing film determine a strong decrease of the mechanical damages caused by UV irradiation. The effects of UV light on the morphology and mechanical properties of the solidified nanocharged epoxy films are investigated by Atomic Force Microscopy (AFM), in the acquisition mode “HarmoniX.„ Nanometric-resolved maps of the mechanical properties of the multi-phase material evidence that the incorporation of low percentages, between 0.1% and 1.0% by weight, of graphene nanoplatelets (GNPs) in the polymeric film causes a relevant enhancement in the mechanical stability of the irradiated films. The beneficial effect progressively increases with increasing GNP percentage. The paper also highlights the potentiality of AFM microscopy, in the acquisition mode “HarmoniX„ for studying multiphase polymeric systems.https://www.mdpi.com/1996-1944/12/6/962polymer durabilityHarmoniX AFMepoxy-based coatingphoto-oxidation of graphene-based nanocompositesUV-irradiationmechanical propertiesmultiphase polymeric systems |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Liberata Guadagno Carlo Naddeo Marialuigia Raimondo Vito Speranza Roberto Pantani Annalisa Acquesta Anna Carangelo Tullio Monetta |
spellingShingle |
Liberata Guadagno Carlo Naddeo Marialuigia Raimondo Vito Speranza Roberto Pantani Annalisa Acquesta Anna Carangelo Tullio Monetta UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection Materials polymer durability HarmoniX AFM epoxy-based coating photo-oxidation of graphene-based nanocomposites UV-irradiation mechanical properties multiphase polymeric systems |
author_facet |
Liberata Guadagno Carlo Naddeo Marialuigia Raimondo Vito Speranza Roberto Pantani Annalisa Acquesta Anna Carangelo Tullio Monetta |
author_sort |
Liberata Guadagno |
title |
UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection |
title_short |
UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection |
title_full |
UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection |
title_fullStr |
UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection |
title_full_unstemmed |
UV Irradiated Graphene-Based Nanocomposites: Change in the Mechanical Properties by Local HarmoniX Atomic Force Microscopy Detection |
title_sort |
uv irradiated graphene-based nanocomposites: change in the mechanical properties by local harmonix atomic force microscopy detection |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-03-01 |
description |
Epoxy based coatings are susceptible to ultra violet (UV) damage and their durability can be significantly reduced in outdoor environments. This paper highlights a relevant property of graphene-based nanoparticles: Graphene Nanoplatelets (GNPs) incorporated in an epoxy-based free-standing film determine a strong decrease of the mechanical damages caused by UV irradiation. The effects of UV light on the morphology and mechanical properties of the solidified nanocharged epoxy films are investigated by Atomic Force Microscopy (AFM), in the acquisition mode “HarmoniX.„ Nanometric-resolved maps of the mechanical properties of the multi-phase material evidence that the incorporation of low percentages, between 0.1% and 1.0% by weight, of graphene nanoplatelets (GNPs) in the polymeric film causes a relevant enhancement in the mechanical stability of the irradiated films. The beneficial effect progressively increases with increasing GNP percentage. The paper also highlights the potentiality of AFM microscopy, in the acquisition mode “HarmoniX„ for studying multiphase polymeric systems. |
topic |
polymer durability HarmoniX AFM epoxy-based coating photo-oxidation of graphene-based nanocomposites UV-irradiation mechanical properties multiphase polymeric systems |
url |
https://www.mdpi.com/1996-1944/12/6/962 |
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