| Download | - View accepted manuscript: Interrelation between melt processing conditions, formulation and properties of polypropylene / short flax and hemp fiber composites (PDF, 714 KiB)
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| Author | Search for: Mihai, Mihaela1; Search for: Denault, Johanne1 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Conference | ANTEC 2011, May 1-5, 2011, Boston, Massachusetts, USA |
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| Abstract | This work investigates the effect of extrusion parameters and formulation on the properties of polypropylene / short flax fiber composites. The parameters that were varied during the twin-screw extrusion process were screw configuration, screw rate, extrusion temperature and flow rate. The effect of the location of the feeding zone of flax fibers is also considered. Concerning the composite formulation, the effect of flax content, presence of coupling agent and of a reactive additive on composite properties are analyzed. Composites obtained with hemp fibers in the same extrusion process are also considered for comparison purposes. The materials were characterized in terms of morphological characteristics, rheological, thermal and mechanical properties. The variation of extrusion parameters shows that polypropylene / flax fibers composites have a large process window that can be considered as an advantage of PP/flax compounding. Tensile strength increased up to 50% with flax fibers content when coupling agent and reactive agent are used. Due to its high flexibility, flax fibers are less oriented in the flow direction and the part performance will be more homogeneous. Furthermore, these composites show a good recyclability by keeping the integrality of their mechanical properties after five reprocessing cycles. |
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| Publication date | 2011-01-01 |
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| In | |
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| Language | English |
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| Peer reviewed | No |
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| NRC number | NRCC 53910 |
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| NPARC number | 18474011 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e9fc1d1f-5dc8-4aeb-8323-ee127604d5cc |
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| Record created | 2011-08-23 |
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| Record modified | 2020-07-14 |
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