Abstract
Mechanical properties of Roselle fiber reinforced vinyl ester biocomposite were studied based on the fiber content and length in the present communication. Usually, natural fiber reinforced polymer composites depend on some aspects such as fiber content, fiber length and orientation, the fiber-matrix adhesion. Composite plates were prepared by a simple hand lay-up technique for two different fiber lengths (3 and 13 mm) and five different fiber content (10, 20, 30, 40 and 50 wt%). Composite specimens were tested according to ASTM standards and their results were recorded. Experimental results showed that mechanical properties such as tensile, flexural and impact, increases with increase of fiber content up to 40 wt% after which it is decreases at both the fiber length. However, modulus values were increased linearly with fiber content of 10 to 50 wt%. Composites with the fiber length of 13 mm show the high level of mechanical properties compared to composites with the fiber length of 3 mm at all combinations of fiber contents. It is observed that the optimal fiber content is 40 wt%, which can be used to obtain the maximum property level in the Roselle fiber reinforced vinyl ester composites
Highlights
In recent years the potentiality of natural cellulose fibers in polymer composites has received considerable attention among material scientists, engineers and researchers around the world for their good mechanical performance and eco-friendliness
Mechanical properties of vinyl ester composites reinforced with the Roselle fibers were experimentally evaluated in this study
Mechanical strength values such as tensile, flexural, and impact, of composite material were greatly influenced by fiber content as well as fiber length
Summary
In recent years the potentiality of natural cellulose fibers in polymer composites (thermosetting and thermoplastic) has received considerable attention among material scientists, engineers and researchers around the world for their good mechanical performance and eco-friendliness. The mechanical properties of Roselle and sisal fiber reinforced polyester hybrid composite were studied at dry and wet conditions. Athijayamani et al [6] investigated the mechanical properties such as tensile, flexural, shear and impact strength, of unidirectional aligned bagasse fibers reinforced vinyl ester composite. Jute fabric and jute mat fiber reinforced unsaturated polyester hybrid composites were prepared by a modified hand lay-up technique and characterized based on mechanical properties. Sivaraj and Rajeshkumar [11] evaluated and studied the effect of process parameters on tensile flexural and impact strength of coir and bagasse fiber reinforced polyester-based hybrid composites and predicts the properties of random oriented hybrid composites. Composites are prepared by a simple hand lay-up method
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