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| Format: | Artículo Open Access |
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Wiley
2025
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| Online-Zugang: | https://4spepublications.onlinelibrary.wiley.com/doi/10.1002/pc.29552 |
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Inhaltsangabe:
- Influence of epoxidized castor oil on the mechanical, thermal, and water diffusion properties of epoxy composites Sathyaraj Sankar Lal Sekar Kannan Polymer Composites AbstractDue to the high consumptions of the petroleum resources and an increase in the conservation awareness, the bio‐based replacements are considered by the researchers as an alternative for synthetic fibers and resins in the composites. This work explores the effects of partially replacing epoxy components with castor oil‐based bio‐resins in a flax fiber‐reinforced epoxy system for eco‐friendly material development. Epoxidized castor oil (ECO) was incorporated into petro‐based epoxy at 10%, 20%, and 30% to serve as a matrix for the composites, which were fabricated using the compression molding technique. Tensile strength, modulus and impact properties of 10% ECO modified epoxy composites increased dramatically for 10% ECO by 5%, 3%, and 5.5%, respectively. The pullout test showed the positive effect of ECO, increasing the pullout adhesion strength by 26.4% at 20% of ECO. The thermomechanical characterization of the bio‐composites showed that the inclusion of between 10% of ECO bio‐resin improves storage modulus and damping by 3.15% and 27%, respectively. The analysis of morphology indicates favorable bonding between the matrix and fiber in the bio‐based epoxy composite, whereas a suboptimal connection is evident in the neat epoxy composite. This research establishes a foundation for developing advanced sustainable bio‐composites with high bio‐based content (up to 50%), tailored for applications requiring enhanced strength and energy absorption capabilities.Highlights Bio‐based resins from castor oil replace synthetic fibers in composite materials. Castor oil‐based bio‐resin enhances mechanical properties of flax fiber composites. 10% ECO‐modified epoxy shows 5% increase in tensile strength and impact properties. ECO modification improves pullout adhesion strength by 26.4% at 20% ECO. Toughness and bio‐content were enhanced by adding ECO. 10.1002/pc.29552 http://onlinelibrary.wiley.com/termsAndConditions#vor