Reducing room noise using polyurethane-urea biofoam/industrial plywood sawdust waste (PUU/IPSW)

Rapid industrial growth leads to environmental problems, including room noise problems. Noise-reducing materials in the market have not fully reduced the maximum noise intensity to 85 dB yet according to the standard quality of room noise. On the other hand, the plywood industry produces sawdust was...

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Bibliographic Details
Main Authors: Nofitasari, Herlina, Masykuri, Mohammad, Ramelan, Ari Handono
Format: Conference Proceeding
Language:English
Subjects:
Absorptivity
Acoustic absorption
Acoustic measurement
Acoustic noise
Acoustic tests
Additives
Coupling agents
Ethylenediamine
Fourier transforms
Infrared spectroscopy
Noise
Noise control
Noise intensity
Noise levels
Noise reduction
Performance tests
Physical properties
Plywood
Polyurethane resins
Polyurethaneureas
Sawdust
Spectrum analysis
Synthesis
Ureas
Visual observation
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Summary:Rapid industrial growth leads to environmental problems, including room noise problems. Noise-reducing materials in the market have not fully reduced the maximum noise intensity to 85 dB yet according to the standard quality of room noise. On the other hand, the plywood industry produces sawdust waste that has not been widely used. The synthesis of noise reduction material with sawdust waste additives is the right alternative. This research aims to synthesize and characterize the polyurethane-urea/plywood sawdust waste (PUU/IPSW) biofoam as a noise reducing material. The PUU/IPSW biofoam synthesis method is performed using a one shot process technique with variations in waste composition of 0 - 5% (w/w), maleic anhydric (MAH) 0.1% (w/w) as a coupling agent and ethylenediamine (EDA) of 1% (w/w) as a chain extender. Structural identification of biofoam was carried out using Fourier Transform Infra-red Spectroscopy (FTIR). The acoustic test was carried out according to ASTM-E1050 standards. From the visual observation, it shows that PUU/IPSW biofoam has physical characteristics of the yellow-brown color and soft-hard texture. Based on FTIR spectra identification, biofoam contains CH, CO and OH chemical groups. The results of acoustic performance test show that the biofoam noise absorption coefficient is very good.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0030730