Abstract

The need for environmentally friendly composite materials that meet the necessary criteria is growing. Making novel environmentally acceptable composites with hybrid Eichhornia crassipes (EGs)/Al 2 O 3 particles is an option. This paper aims to investigate the thermal, tensile strength, and flexural strength properties of a polyester composite filled with hybrid EG/Al 2 O 3 particles. The tensile strength, flexural strength, and morphology of EGs/Al 2 O 3 hybrid composite will be investigated in this work. The hot pressed for 60 minutes at 170°C procedure was used to shape the hybrid composite. EGs/Al 2 O 3 particles content was altered from 0:25 to 5:20, 10:15 to 15:10, 20:5, and 25:0 (vol.%). The results reveal that when the EGs content of the composite is in the range of 10–15% (vol.%), the tensile and bending strength of the composite increases. The EGI (15% EGs:10% Al 2 O 3 ) and EGH (10% EGs:10% Al 2 O 3 ) composites had the highest tensile and bending strengths, with 38.697 and 77.786 MPa, respectively. The boost in strength is thought to be due to Al 2 O 3 acting as a cursor in the composite, preventing fracture progression. The scanning electron microscope (SEM) fracture morphology reveals a strong and tight interfacial connection between the EGs, Al 2 O 3 , and polyester layers. In addition, when the EGs grew, the composites’ thermal characteristics improved. According to the findings, the EGs/ Al 2 O 3 particle hybrid composite can be used in automotive applications.

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