Abstract
The main objective of this research is to study the effect of fiber weight ratio and chemical fiber modification on flexural properties of composites reinforced with Posidonia fiber. An unsaturated polyester matrix reinforced with untreated and treated Posidonia fibers was fabricated under various fiber weight ratios. Results showed that the combined chemical treatment provided better mechanical properties of composites in comparison with untreated fiber. The fiber weight ratio influenced the flexural properties of composites. Indeed, a maximum value of flexural modulus was observed for 10% fiber weight ratio for composites reinforced with treated fibers. SEM photographs revealed a different fracture surface between Posidonia fibers reinforced polyester composites.
Highlights
Natural fibre-reinforced polymer composites have gained attention among materials scientists and engineers in recent years due to the need to develop an environmental friendly material and partly replace currently used synthetic fibres in fibre-reinforced composites
Several researches show a significant influence of these chemical treatments on physical, chemical and mechanical properties of natural fibres as well as on the properties of fiber-polymer composites [9]-[12]
It is clear that the physical and mechanical properties were influenced after the chemical treatment
Summary
Natural fibre-reinforced polymer composites have gained attention among materials scientists and engineers in recent years due to the need to develop an environmental friendly material and partly replace currently used synthetic fibres in fibre-reinforced composites. Natural fibre-based composites have good potential for use as structural materials. Several authors have reported the use of natural. (2016) Effect of Fiber Weight Ratio and Fiber Modification on Flexural Properties of Posidonia-Polyester Composites. Open Journal of Composite Materials, 5, 69-77. Many chemical treatments such as sodium hydroxide, silane, acetic acid, acrylic acid, maleated coupling agents, isocyanates, potassium permanganate, peroxide, etc., were widely used for modification of fiber surface [8]. Several researches show a significant influence of these chemical treatments on physical, chemical and mechanical properties of natural fibres as well as on the properties of fiber-polymer composites [9]-[12]
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