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

Nofitasari, Herlina; Masykuri, Mohammad; Ramelan, Ari Handono

doi:10.1063/5.0030730

Cited by 1 publication

(4 citation statements)

References 10 publications

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“…The three samples were chosen to be compared because they were the samples with the highest Sound Absorption Coefficient (SAC) value from their treatments. Other results revealed that samples treated with RSW and IPSW natural fiber waste with compositions of 0, 1, 2, 3, 4, and 5 (%) could be seen in other published papers [12], [14].…”

Section: Acoustic Testmentioning

confidence: 64%

“…Respectively, from 1-5, the absorption peak of each sample was 2972; 2973; 2922; 2926; 2971 (cm-1 ). Here, the hydroxyl group can be detected in the wave number range of 3422 -3314 (cm-1 ) [12], [14], [19]. Samples 1-5 respectively had absorption peaks of 3382; 3381; 3420; 3416; 3382 (cm-1 ).…”

Section: Ftir Spectroscopy Analysismentioning

confidence: 93%

“…Here, the absorption range of the urethane functional group wave number of lignin is 1724-1705 (cm-1 ) [16], [17]. Meanwhile, the methylene functional group has a wavenumber absorption peak in the range of 2935-2915 and 3000-2970 (cm-1 ) [12], [14], [16], [18]. Respectively, from 1-5, the absorption peak of each sample was 2972; 2973; 2922; 2926; 2971 (cm-1 ).…”

Section: Ftir Spectroscopy Analysismentioning

confidence: 99%

“…Mixing polyurethane-urea foam (PUU) with plywood industrial sawdust (IPSW) and rice straw waste (RSW) could increase the sound absorption coefficient value in the acoustic test of the material, while polyurethane foam mixed with rubber wood sawdust also increases the acoustic test results [2], [12], [14]. Also, the synthesis of polyurethane foam from the raw material of bio-polyol used in cooking oil has an open-cell foam structure and good acoustic and thermal performance, both of which parameters for the final application should be weighed [11].…”

Section: Introductionmentioning

confidence: 99%

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Eco-Friendly of Sound-Absorbing Material Based on Polyurethane-Urea with Natural Fiber Waste

Masykuri,

Nofitasari,

Rahmawati

2023

NHC

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Noise has a wide impact on human health and non-health. One of the sound-absorbing materials commonly used in the community is polyurethane-urea foam. However, public concerns about the environment because the availability of petroleum as a raw material for polyurethane-urea foam synthesis is limited, and the waste pollutes the environment, posing a new challenge to be researched. For this reason, this study aims to develop polyurethane-urea foam with a mixture of natural fiber waste as an eco-friendly alternative to sound-absorbing materials. The raw materials used were natural fiber waste (rice straw waste and plywood industry sawdust waste) and chemicals (PEG, MDI, EDA, MAH), with a waste composition of 5% (w/w). The synthesis method employed was a one-shot method. The synthesized foam was characterized by FTIR, camera microscope, SEM, TGA and acoustic tests. The results uncovered that the sample had peaks in the absorption of the functional groups NH, OH, Urethane, Aromatic, and Amide. The morphological structure of the foam consisted of an open cell and a closed cell. Its thermal resistance was above 125°C. In addition, the foam with the highest sound-absorbing ability was polyurethane-urea foam/rice straw waste at 0.83 at a frequency of 4312 Hz.

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Section: Acoustic Testmentioning

confidence: 64%