- Title
- Maize stalk fibre reinforced natural rubber/tyre-tread reclaimed rubber composites
- Creator
- Mente, Pumza
- Subject
- Polymeric composites Rubber
- Date Issued
- 2017
- Date
- 2017
- Type
- Thesis
- Type
- Masters
- Type
- MSc
- Identifier
- http://hdl.handle.net/10948/19332
- Identifier
- vital:28852
- Description
- This research project focuses on the production of reclaimed rubber composites reinforced with natural fibres obtained from agricultural waste. The prepared natural fibre composites were characterized through evaluation of curing characteristics, tensile properties, thermal properties, dynamic mechanical properties and electron microscopy imaging. Untreated composites generally showed poor properties which were attributed to poor compatibility and fibre agglomeration. Various treatments were then employed in attempts to improve the composite properties. Fibre treatments used were water treatment and silane treatments using two different silane coupling agents. Torque, reaction rate and tensile modulus were observed to increase with addition of reclaimed rubber and natural fibres. Tensile strength and elongation at break increased with addition of natural rubber. An increase in thermal stability was observed with addition of reclaimed rubber. Dynamic mechanical analysis (DMA) results have shown that addition of reclaimed rubber resulted to an increase in glass transition temperature. Scanning electron microscopy (SEM) images of tensile fractured composites showed evidence of fibre pull-outs from the matrix. Removal of lignin from treated natural fibres was evident from thermogravimetric analysis (TGA) for all fibre treatments. There were no noticeable improvements in composites properties with use of fibre treatments and there were no statistical differences observed among the different fibre treatments. Generally, the composites prepared showed high stiffness and low tensile strength.
- Format
- ix, 152 leaves
- Format
- Publisher
- Nelson Mandela Metropolitan University
- Publisher
- Faculty of Science
- Language
- English
- Rights
- Nelson Mandela Metropolitan University
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NMU School of BioMolecular and Chemical Sciences
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Mente | 7 MB | Adobe Acrobat PDF | View Details Download |