Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins
In this study, two different fillers were prepared from carbon-based ashes, produced from the wooden biomass of a pyro-gasification plant, and starting from lignocellulosic waste. The first type was obtained by dry ball-milling (DBA), while the second one was prepared by oxidation in H<sub>2&l...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/11/6/1011 |
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| author | Enrica Stasi Antonella Giuri Maurizio La Villetta Domenico Cirillo Gaetano Guerra Alfonso Maffezzoli Eleonora Ferraris Carola Esposito Corcione |
| author_facet | Enrica Stasi Antonella Giuri Maurizio La Villetta Domenico Cirillo Gaetano Guerra Alfonso Maffezzoli Eleonora Ferraris Carola Esposito Corcione |
| author_sort | Enrica Stasi |
| collection | DOAJ |
| description | In this study, two different fillers were prepared from carbon-based ashes, produced from the wooden biomass of a pyro-gasification plant, and starting from lignocellulosic waste. The first type was obtained by dry ball-milling (DBA), while the second one was prepared by oxidation in H<sub>2</sub>O<sub>2</sub> of the dry ball-milled ashes (oDBA). The characterization of the fillers included wide-angle x-ray diffraction (WAXD), thermogravimetric, and Fourier-transform infrared spectroscopy (FTIR) analysis. The DBA and oDBA fillers were then tested as possible catalysts for the crosslinking reaction of a diglycidyl ether of bisphenol A (DGEBA) with a diamine. The cure reaction was studied by means of rheometry and differential scanning calorimetry (DSC). The oDBA filler exhibits both a higher catalytic activity on the epoxide−amine reaction than the DB<i>A</i> sample and improved mechanical properties and glass transition temperature. The results obtained indicate, hence, the potential improvement brought by the addition of carbon-based waste ashes, which allow both increasing the flexural properties and the glass transition temperature of the epoxy resin and reducing the curing time, acting as a catalyst for the crosslinking reaction of the epoxy resin. |
| first_indexed | 2024-04-12T20:24:06Z |
| format | Article |
| id | doaj.art-6f805ab1bd24489189c417643874f0fd |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-12T20:24:06Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-6f805ab1bd24489189c417643874f0fd2022-12-22T03:17:55ZengMDPI AGPolymers2073-43602019-06-01116101110.3390/polym11061011polym11061011Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy ResinsEnrica Stasi0Antonella Giuri1Maurizio La Villetta2Domenico Cirillo3Gaetano Guerra4Alfonso Maffezzoli5Eleonora Ferraris6Carola Esposito Corcione7Dipartimento di Ingegneria dell’Innovazione Università del Salento, 73100 Lecce, ItalyDipartimento di Ingegneria dell’Innovazione Università del Salento, 73100 Lecce, ItalyC.M.D. Costruzioni Motori Diesel S.p.A., Via Pacinotti, 2, 81020 San Nicola La Strada (CE), ItalyC.M.D. Costruzioni Motori Diesel S.p.A., Via Pacinotti, 2, 81020 San Nicola La Strada (CE), ItalyDipartimento di Chimica e Biologia, Università di Salerno, 84084 Fisciano (SA), ItalyDipartimento di Ingegneria dell’Innovazione Università del Salento, 73100 Lecce, ItalyDepartment of Mechanical Engineering, Campus de Nayer, 2860 KU Leuven, BelgiumDipartimento di Ingegneria dell’Innovazione Università del Salento, 73100 Lecce, ItalyIn this study, two different fillers were prepared from carbon-based ashes, produced from the wooden biomass of a pyro-gasification plant, and starting from lignocellulosic waste. The first type was obtained by dry ball-milling (DBA), while the second one was prepared by oxidation in H<sub>2</sub>O<sub>2</sub> of the dry ball-milled ashes (oDBA). The characterization of the fillers included wide-angle x-ray diffraction (WAXD), thermogravimetric, and Fourier-transform infrared spectroscopy (FTIR) analysis. The DBA and oDBA fillers were then tested as possible catalysts for the crosslinking reaction of a diglycidyl ether of bisphenol A (DGEBA) with a diamine. The cure reaction was studied by means of rheometry and differential scanning calorimetry (DSC). The oDBA filler exhibits both a higher catalytic activity on the epoxide−amine reaction than the DB<i>A</i> sample and improved mechanical properties and glass transition temperature. The results obtained indicate, hence, the potential improvement brought by the addition of carbon-based waste ashes, which allow both increasing the flexural properties and the glass transition temperature of the epoxy resin and reducing the curing time, acting as a catalyst for the crosslinking reaction of the epoxy resin.https://www.mdpi.com/2073-4360/11/6/1011carbon-based ashesgel timedifferential scanning calorimetry |
| spellingShingle | Enrica Stasi Antonella Giuri Maurizio La Villetta Domenico Cirillo Gaetano Guerra Alfonso Maffezzoli Eleonora Ferraris Carola Esposito Corcione Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins Polymers carbon-based ashes gel time differential scanning calorimetry |
| title | Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins |
| title_full | Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins |
| title_fullStr | Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins |
| title_full_unstemmed | Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins |
| title_short | Catalytic Activity of Oxidized Carbon Waste Ashes for the Crosslinking of Epoxy Resins |
| title_sort | catalytic activity of oxidized carbon waste ashes for the crosslinking of epoxy resins |
| topic | carbon-based ashes gel time differential scanning calorimetry |
| url | https://www.mdpi.com/2073-4360/11/6/1011 |
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