Evaluation of Tensile and Flexural Properties of Sisal/ Coconut Coir Reinforced with High Density Polyethylene Hybrid Composite

Abstract

here the study of developed hybrid composite investigates the effect of reinforced natural fiber with high density polyethylene. Here HDPE were used fresh and recycled with reinforced natural fibers. To manufacture hybrid composite material and investigation, the sisal and coconut coir fibers are washed and treated with chemical NaOH solution and SEM used to investigate chemical modification on fiber surfaces. Here the sisal and coconut coir fibers are used either alone or simultaneous. The result defines that the reinforced sisal and coconut coir fiber with HDPE gives great tensile and flexural properties as comparison to use single fiber reinforced with HDPE. Further result shows that when the content of sisal and coir fiber in composite is taken 10wt% and HDPE is 80% then the tensile strength are 21.6 MPa and flexural strength are 18.5 MPa obtained as in comparison with content 5% sisal and coir and 90 % HDPE which gives tensile strength are 19.5 MPa and flexural strength are 17.5 MPa. Where as in solo usage of natural fibers also gives some decrement in tensile and flexural strength power of developed composite. Here with 30% sisal and 70% HDPE results tensile strength are 12.4 MPa and flexural strength are 14.3 MPa. Similarly, in case of only 30% coir and 70 % HDPE we get tensile strength are 12.0 MPa and flexural strength are 14.6 MPa. So in short form we say that sisal and coir fibers are the primary reinforce content that gives great tensile and flexural properties of composite together as in comparisons of others. Keywords— Natural fibers; HDPE; Chemical Tretment; Hybrid Composite; Tensile Strength; Flexural Strength.