Acoustic Performance Mixture of Natural Fibres of Oil Palm Frond (OPF) and Empty Fruit Bunch (EFB)

The expansion of the oil palm industry has affected the environment and the poor handling of oil palm waste has greatly endangered the habitat surrounds it. The oil palm natural fibre waste can be put to good use and used as a sound absorber for its amazing acoustic properties. At the same time, the demand for natural fibre sound-absorbing panels is increasing due to its low-cost fabrication and its healthier than synthetic fibre. This research has studied the acoustic properties of mixing Empty Fruit Bunch (EFB) and Oil Palm Frond (OPF) in a thickness of 12 mm, 14 mm, 16 mm, and 18 mm. The fibreboard has been fabricated at a density of 120 kg/m3. The Sound Absorption Coefficient, SAC, and morphologies of all the samples were examined using the Impedance Tube Method (ITM) and Scanning Electron Microscope, (SEM). The sample’s SAC value increased with thickness. It is noteworthy that this combination percentage of natural fibres of EFB and OPF show good acoustic performance where the SAC values above 0.8 at wide frequency 3000 - 6400 Hz. Sample thickness 14 mm, 18 mm achieved unity (1.0) at frequency 4000 - 5500 Hz. In addition, all the samples were found to exceed 90 % of the absorption rate in the range of 4500 - 6400 Hz. The morphology content of EFB and OPF helps in enhancing the absorption rate.

[1]  W. Fang,et al.  Extrusion Foaming of Lightweight Polystyrene Composite Foams with Controllable Cellular Structure for Sound Absorption Application , 2019, Polymers.

[2]  H. S. Woon,et al.  Acoustic properties of natural fiber of oil palm trunk , 2018, International Journal of ADVANCED AND APPLIED SCIENCES.

[3]  Soh Kheang Loh,et al.  The potential of the Malaysian oil palm biomass as a renewable energy source , 2017 .

[4]  A. Putra,et al.  Oil palm empty fruit bunch fibres as sustainable acoustic absorber , 2017 .

[5]  Clinton N. Jenkins,et al.  The Impacts of Oil Palm on Recent Deforestation and Biodiversity Loss , 2016, PloS one.

[6]  Alison McKay,et al.  Sustainability in the Malaysian palm oil industry , 2014 .

[7]  SiJoon Lee,et al.  Production of Medium Density Fibreboard (MDF) from Oil Palm Trunk (OPT) , 2014 .

[8]  U. Hansen,et al.  Sustainable energy transitions in emerging economies: The formation of a palm oil biomass waste-to-energy niche in Malaysia 1990–2011 , 2014 .

[9]  M. J. Saad,et al.  Kenaf Core Particleboard and Its Sound Absorbing Properties , 2012 .

[10]  N. Selvakumar,et al.  A preliminary investigation on kapok/polypropylene nonwoven composite for sound absorption , 2012 .

[11]  M. T. Paridah,et al.  Oil Palm Biomass Fibres and Recent Advancement in Oil Palm Biomass Fibres Based Hybrid Biocomposites , 2012 .

[12]  Wan Rosli Wan Daud,et al.  OIL PALM FIBERS AS PAPERMAKING MATERIAL: POTENTIALS AND CHALLENGES , 2010 .

[13]  Rahul Vallabh,et al.  New Approach for Determining Tortuosity in Fibrous Porous Media , 2010 .

[14]  Ahmad Mujahid Ahmad Zaidi,et al.  Sound Absorption of Arenga Pinnata Natural Fiber , 2010 .

[15]  Alan S. Cummings,et al.  Deduction of tortuosity and porosity from acoustic reflection and transmission measurements on thick samples of rigid-porous materials , 2005 .

[16]  K. Kilburn,et al.  Pulmonary effects of exposure to fine fibreglass: irregular opacities and small airways obstruction. , 1992, British journal of industrial medicine.

[17]  L. Ismail Acoustic and durability performances of Arenga Pinnata panel , 2012 .

[18]  André Faaij,et al.  Exploring land use changes and the role of palm oil production in Indonesia and Malaysia , 2011 .

[19]  H. Ismail,et al.  Bamboo fibre filled natural rubber composites: the effects of filler loading and bonding agent , 2002 .