Sintesis Biokomposit Serat Sabut Kelapa dan Resin Poliester dengan Alkalisasi KOH Menggunakan Metode Hand Lay-Up

Abstract

Development of bio-composite materials is growing rapidly, as these materials are light, strength, and have good resistance to corrosion. Moreover, bio-composite is one of many options to utilize agricultural waste. Polyester resin and coconut coir fiber can be utilized as matrix and filler for bio-composites. Alkalization is a method to obtain high quality cellulose from natural materials. The objective of this study is to examine the effect of KOH concentration on tensile strength and hardness of coconut coir fiber and polyester resin composite. The composite was successfully synthesized using hand lay-up method. Tensile strength and hardness tests were conducted to examine the composite's physical properties, meanwhile Fourier Transform Infrared was employed to examine the material's functional group. Bio-composite with coconut coir fiber and polyester ratio=40:60 yielded the highest tensile strength of 6.

The Effect of Coffee Husk Waste Addition with Alkalisation Treatment on the Mechanical Properties of Polypropylene Composites

“…Without KOH alkalisation treatment, the tensile strength of untreated fibres was 14.12 MPa, while fibres treated with 5% KOH achieved the greatest tensile strength of 36.83 MPa. In the study [16], the KOH alkalisation treatment on coco fibre added to polyester polymer resulted in variable tensile strength. The tensile strength without alkalisation treatment was 1.41 MPa, and the 5% alkalisation treatment was 5.29 MPa.…”