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

Abstract

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) biof oam as a noise reducing material. The PUU/IPSW biof oam 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 biof oam was carried out using Fourier Transform Infra-red Spectroscopy (FUR). The acoustic test was carried out according to ASTM-E1050 standards. From the visual observation, it shows that PUU/IPSW biof oam has physical characteristics of the yellow-brown color and sof t-hard texture. Based on FTIR spectra identification, biof oam contains CH, CO and OH chemical groups. The results of acoustic performance test show that the biof oam noise absorption coefficient is very good.