Abstract
This study aims to investigate the capability of sound absorption coefficient (SAC) of oil palm frond (OPF) composite. Also, to characterize the fiber surface without treatment and with alkali treatment. Two parameters were formulated to characterize the SAC ability of the OPF composite: chemical treatment and density of composite. The composite was manufactured from a waste OPF as a reinforcement and urea-formaldehyde (UF) resin as a matrix. The fibers were blended with UF 10% (weight fraction) and formed by hot-pressing under the pressure of 9 tons at 140°C for 5mn. The SAC was measured by the impedance tube respected with ASTM 1050 (the transfer function method) within the frequency of 125-6400 Hz. Morphological analysis is investigated by scanning electron microscopy (SEM) on untreated and alkali-treated OPF fiber. The measurement data were obtained and compared with different densities and treatments. It reveals that the SAC of OPF composite was proportion to density and alkali-treated. The SAC worsens as the composite becomes dense due to the greater density.
Original language | English |
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Title of host publication | Key Engineering Materials |
Publisher | Trans Tech Publications Ltd |
Pages | 257-263 |
Number of pages | 7 |
DOIs | |
Publication status | Published - 2023 |
Publication series
Name | Key Engineering Materials |
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Volume | 941 |
ISSN (Print) | 1013-9826 |
ISSN (Electronic) | 1662-9795 |
Bibliographical note
Funding Information:This work was supported by Mechanical Engineering Department, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember grant number 1505/PKS/ITS/2021 and 1580/PKS/ITS/2021. The authors would like to thank Associate Professor Ubaidillah, Ph.D., and the Iwany Acoustics Research Group (iARG) for providing acoustic testing for this study.
Publisher Copyright:
© 2023 Trans Tech Publications Ltd, Switzerland.
Keywords
- Alkali Treatment
- Composite Reinforced
- Natural Fiber
- Oil Palm Frond
- Reduce Waste Generation
- SEM
- Sound Absorption Coefficient