About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Natural Fibers and Biocomposites
|
| Presentation Title |
Influence of Kraft Lignin on UV Resistance and Mechanical Properties of Epoxidized Soybean Oil-Based Epoxy Composites |
| Author(s) |
PAULO ROBERTO CORREIA MARCELINO, Felipe Perissé Duarte Lopes, Heliane Rosa Amaral, Michel Picanço Oliveira |
| On-Site Speaker (Planned) |
Michel Picanço Oliveira |
| Abstract Scope |
The increasing use of plastics has driven the search for eco-friendly alternatives, including plant-based composites aimed at reducing petrochemical-derived components. Epoxidized soybean oil (ESO), produced via epoxidation of soybean oil, is a renewable resource suitable for epoxy resin synthesis. However, conventional polymers and composites are susceptible to UV degradation, affecting their performance. In this study, kraft lignin was investigated as an additive in ESO-based epoxy composites (OSE20) for its UV-protective properties. Forty tensile specimens were fabricated with 20% ESO and varying lignin content (0%, 10%, 20%, and 30%). Half of the samples were exposed to UV radiation. Results showed that lignin effectively mitigated UV degradation, while samples without lignin exhibited greater damage. Despite this, mechanical strength decreased in all lignin-containing formulations. FTIR spectra showed no clear chemical changes. Thermal analysis revealed that lignin modified the degradation temperatures. Overall, lignin shows promise but requires further investigation to optimize mechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Biomaterials, Composites |