Dynamic mechanical behavior of vinylester matrix composites reinforced by Luffa cylindrica modified fibers
| Autor: | Vagner Roberto Botaro, Eder Siqueira, Kátia Monteiro Novack |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Extraction (chemistry) Composite number Thermosetting polymer Context (language use) General Chemistry Polymer Surfaces Coatings and Films Matrix (chemical analysis) chemistry Ultimate tensile strength Materials Chemistry Surface modification Composite material |
| Zdroj: | Journal of Applied Polymer Science. 124:1967-1975 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.35019 |
| Popis: | Currently, there is a demand for new engineering materials presenting a combination of strength, low density, processing easiness, and reduced costs. In this context, polymer matrix composites reinforced by natural fibers have been studied in recent years due to their ecological and economic advantages. Some fibers are still little explored in literature despite presenting a great potential as reinforcement like Luffa cylindrica. The present work aims at the preparation and characterization of a vinylester thermoset matrix composite material reinforced by fibers of the natural L. cylindrica fruit after modification treatments. In this study, extraction treatments in organic solvents, mercerization, and a quite new esterification with BTDA dianhydrides were used and the results showed that in all cases, the composite materials reinforced by Luffa fibers have showed improvements in mechanical and thermal properties compared to the vinylester matrix. As an example, 50% tensile increase was obtained for the composite reinforced by fibers esterified with benzophenone tetracarboxylic dianhydride when compared with thermoset matrix. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
| Databáze: | OpenAIRE |
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