Short coir fiber-reinforced natural rubber composites: Effects of fiber length, orientation, and alkali treatment
| Autor: | Reethamma Joseph, Sabu Thomas, V. G. Geethamma |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope Composite number Vulcanization General Chemistry Surfaces Coatings and Films law.invention chemistry.chemical_compound chemistry Natural rubber law Sodium hydroxide visual_art Materials Chemistry medicine visual_art.visual_art_medium Fiber Composite material Swelling medicine.symptom Coir |
| Zdroj: | Journal of Applied Polymer Science. 55:583-594 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1995.070550405 |
| Popis: | Natural rubber is reinforced with untreated coir fiber chopped to different lengths, viz., 6, 10, and 14 mm. Mixes were also prepared using 10 mm-long coir fibers treated with 5% sodium hydroxide solution for different time intervals, viz., 4, 24, 48, and 72 h. These composites were vulcanized at 150°C. The vulcanization parameters, processability characteristics, and stress–strain properties of these composites were analyzed. The rubbercoir interface bonding was improved by the addition of a resorcinol–hexamethylenetetramine dry-bonding system. The reinforcing property of the alkali-treated fiber was compared with that of the untreated one. The extent of fiber orientation in the composite was determined from green strength measurements. From anisotropic swelling studies, the extent of fiber alignment and the strength of fiber–rubber interface adhesion were analyzed. Scanning electron microscopic studies were carried out to investigate the fiber surface morphology, fiber pullout, and fiber–rubber interface. © 1995 John Wiley & Sons, Inc. |
| Databáze: | OpenAIRE |
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