Abstract
Okra fiber (OF) reinforced polypropylene (PP) matrix composites (45 wt% fiber) were fabricated using a compression molding technique. To fabricate the composite treated Okra fiber were used. Tensile strength (TS), tensile modulus (TM), elongation at break (Eb%), bending strength (BS), bending modulus (BM), impact strength (IS) and hardness of the composites were found to be 38.5 MPa, 0.68 GPa, 8.2%, 72.5 MPa, 5.56 GPa, 22.87 kJ/m2, and 97 (Shore-A), respectively. Then E-glass fiber (woven)-reinforced polypropylene-based composites (45 wt% fiber) were fabricated and the mechanical properties (TS, TM, Eb%, BS, BM, IS, hardness) were found 80 MPa, 5 GPa, 11%, 81 MPa, 10 GPa, 32 kJ/m2, and 97 (Shore-A), respectively. After that compared E-glass fiber/PP based composites mechanical properties with those of the OF/PP based composites mechanical properties. It was observed that E-glass fiber-based composites showed almost double mechanical properties compared to OF/PP based composite. Water absorption and elongation percentage at break showed different scenario and it was noticed from the experimental study that water absorption and elongation at break (%) of was higher than E-glass based composites. After the flexural test, fracture surfaces of the E-glass/PP and OF/PP composites were investigated using scanning electron microscope (SEM) and the results revealed that E-glass fiber reinforced based composites matrix adhesion less than the E-glass fiber reinforced based composites.
Highlights
IntroductionSynthetic fiber-reinforced polymerbased composites gained huge attention
In the last century, synthetic fiber-reinforced polymerbased composites gained huge attention
Water uptake tests of Okra fibers were studied and it was found that Okra fiber gained optimum amounts of water absorption but it takes lots of time
Summary
Synthetic fiber-reinforced polymerbased composites gained huge attention. Synthetic fiberbased composite is used as a replacement of the conventional structural materials such as metals, wood and reinforced concrete [1]. Day by day it has gained more popularity because of its high stiffness, good processability, fairly cheap, good chemical resistance quality, ease of installation, electrically insulating, higher elongation at break (%) compared to other materials, high-temperature resistance, fatigue, etc. Several synthetic fibers are widely used to manufacture the composites [2,3]. Synthetic fibers of reinforcing agents such as E-glass, carbon, aramid, nylon as well as natural fibers like jute, hemp, sisal, Okra, pineapple, kenaf, coir, etc. Among all the synthetic fibers, E-glass fibers are most common and prominent fiber due to their low cost and comparatively better physical and mechanical properties
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