Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings
Epoxidized linseed oil (ELO) and kraft lignin (LnK) were used to obtain new sustainable composites as corrosion protection layers through a double-curing procedure involving UV radiation and thermal curing to ensure homogeneous distribution of the filler. The crosslinked structures were confirmed by...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/21/3792 |
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| author | Raluca Sanda Komartin Brindusa Balanuca Madalina Ioana Necolau Anca Cojocaru Raluca Stan |
| author_facet | Raluca Sanda Komartin Brindusa Balanuca Madalina Ioana Necolau Anca Cojocaru Raluca Stan |
| author_sort | Raluca Sanda Komartin |
| collection | DOAJ |
| description | Epoxidized linseed oil (ELO) and kraft lignin (LnK) were used to obtain new sustainable composites as corrosion protection layers through a double-curing procedure involving UV radiation and thermal curing to ensure homogeneous distribution of the filler. The crosslinked structures were confirmed by Fourier-transform infrared spectrometry (FTIR), by comparative monitorization of the absorption band at 825 cm<sup>−1</sup>, attributed to the stretching vibration of epoxy rings. Thermal degradation behavior under N2 gas indicates that the higher LnK content, the better thermal stability of the composites (over 30 °C of Td10% for ELO + 15% LnK), while for the experiment under air-oxidant atmosphere, the lower LnK content (5%) conducted to the more thermo-stable material. Dynamic-mechanic behavior and water affinity of the new materials were also investigated. The increase of the Tg values with the increase of the LnK content (20 °C for the composite with 15% LnK) denote the reinforcement effect of the LnK, while the surface and bulk water affinity were not dramatically affected. All the obtained composites were tested as carbon steel corrosion protection coatings, resulting in significant increase of corrosion inhibition efficiency (IE) of 140–380%, highlighting the great potential of the bio-based ELO-LnK composites as a future perspective for industrial application. |
| first_indexed | 2024-03-10T05:55:04Z |
| format | Article |
| id | doaj.art-acd99f013760495a979cfe797bef8fd8 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T05:55:04Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-acd99f013760495a979cfe797bef8fd82023-11-22T21:28:48ZengMDPI AGPolymers2073-43602021-11-011321379210.3390/polym13213792Composite Materials from Renewable Resources as Sustainable Corrosion Protection CoatingsRaluca Sanda Komartin0Brindusa Balanuca1Madalina Ioana Necolau2Anca Cojocaru3Raluca Stan4Department of Organic Chemistry “C. Nenitescu”, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaDepartment of Organic Chemistry “C. Nenitescu”, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaAdvanced Polymer Materials Group, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaDepartment of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaDepartment of Organic Chemistry “C. Nenitescu”, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaEpoxidized linseed oil (ELO) and kraft lignin (LnK) were used to obtain new sustainable composites as corrosion protection layers through a double-curing procedure involving UV radiation and thermal curing to ensure homogeneous distribution of the filler. The crosslinked structures were confirmed by Fourier-transform infrared spectrometry (FTIR), by comparative monitorization of the absorption band at 825 cm<sup>−1</sup>, attributed to the stretching vibration of epoxy rings. Thermal degradation behavior under N2 gas indicates that the higher LnK content, the better thermal stability of the composites (over 30 °C of Td10% for ELO + 15% LnK), while for the experiment under air-oxidant atmosphere, the lower LnK content (5%) conducted to the more thermo-stable material. Dynamic-mechanic behavior and water affinity of the new materials were also investigated. The increase of the Tg values with the increase of the LnK content (20 °C for the composite with 15% LnK) denote the reinforcement effect of the LnK, while the surface and bulk water affinity were not dramatically affected. All the obtained composites were tested as carbon steel corrosion protection coatings, resulting in significant increase of corrosion inhibition efficiency (IE) of 140–380%, highlighting the great potential of the bio-based ELO-LnK composites as a future perspective for industrial application.https://www.mdpi.com/2073-4360/13/21/3792epoxidized linseed oillignincompositesanti-corrosion coating |
| spellingShingle | Raluca Sanda Komartin Brindusa Balanuca Madalina Ioana Necolau Anca Cojocaru Raluca Stan Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings Polymers epoxidized linseed oil lignin composites anti-corrosion coating |
| title | Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings |
| title_full | Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings |
| title_fullStr | Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings |
| title_full_unstemmed | Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings |
| title_short | Composite Materials from Renewable Resources as Sustainable Corrosion Protection Coatings |
| title_sort | composite materials from renewable resources as sustainable corrosion protection coatings |
| topic | epoxidized linseed oil lignin composites anti-corrosion coating |
| url | https://www.mdpi.com/2073-4360/13/21/3792 |
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