Sound Insolation of Local Economic Materials Prepared by Natural Rubber Latex and Pineapple Leaf Fiber

The sound insulation properties of local economic materials made from natural rubber latex and pineapple leaf fiber were investigated, in order to develop and increase the economy of the community. The surface of pineapple leaf fiber was treated with alkaline treatment individually. The random fiber range was mixed with natural rubber latex in five different fractions, varying from 10% to 50% with an increment of 10%. The thickness of each sample is kept constant at 50 mm. Method used to measure sound absorption coefficient (α) is Impedance Tube Method ASTM E1050-09, which has been used for measuring the sound absorption and sound transmission loss. It was found that the sound absorption coefficient (SAC) increases with the fiber fraction. The sound insulation test results show that the obtained product of natural rubber with pineapple leaf fiber has a promising possibility that can be used as a potential material for the development of sustainable sound absorber material.