Mechanical, physical and tribological characterization of nano-cellulose fibers reinforced bio-epoxy composites: An attempt to fabricate and scale the ‘Green’ composite
| Autor: | Emad Omrani, Krishna M. Pillai, Afsaneh Dorri Moghadam, Pradeep K. Rohatgi, Pradeep L. Menezes, Bamdad Barari |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Nanocomposite Transfer molding Polymers and Plastics Composite number Organic Chemistry Nanofibers 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Cellulose fiber visual_art visual_art.visual_art_medium Materials Chemistry Epoxy Compounds Surface modification Composite material Cellulose 0210 nano-technology Curing (chemistry) Mechanical Phenomena |
| Zdroj: | Carbohydrate Polymers. 147:282-293 |
| ISSN: | 0144-8617 |
| DOI: | 10.1016/j.carbpol.2016.03.097 |
| Popis: | The development of bio-based composites is essential in order to protect the environment while enhancing energy efficiencies. In the present investigation, the plant-derived cellulose nano-fibers (CNFs)/bio-based epoxy composites were manufactured using the Liquid Composite Molding (LCM) process. More specifically, the CNFs with and without chemical modification were utilized in the composites. The curing kinetics of the prepared composites was studied using both the isothermal and dynamic Differential Scanning Calorimetry (DSC) methods. The microstructure as well as the mechanical and tribological properties were investigated on the cured composites in order to understand the structure-property correlations of the composites. The results indicated that the manufactured composites showed improved mechanical and tribological properties when compared to the pure epoxy samples. Furthermore, the chemically modified CNFs reinforced composites outperformed the untreated composites. The surface modification of the fibers improved the curing of the resin by reducing the activation energy, and led to an improvement in the mechanical properties. The CNFs/bio-based epoxy composites form uniform tribo-layer during sliding which minimizes the direct contact between surfaces, thus reducing both the friction and wear of the composites. |
| Databáze: | OpenAIRE |
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