Abstract

• Poly vinyl alcohol (PVA) based polymers are being widely used in additive manufacturing because of their physical characteristics such as low weight, flexibility, thermally and electrically insulation. The morphological characterization of pure PVA film and scraped tire rubber fiber (STRF) reinforced PVA films were investigated by the digital optical microscope (x1000). The average size of air bubble of PVA film and STRF reinforced PVA films are about 1.9E-8 mm2 and 7.06E-8 mm2 . The chemical functional group of pure PVA film and 5 w/v%, 10 w/v%, 15 w/v%, 20 w/v% waste scraped tire rubber fiber reinforced PVA films were examined by the Fourier Transform Infrared Spectroscopy (FTIR) in the range of wave number from 4000 to 450 cm−1 . The resultant FTIR transmittance spectra were matched with chemical functional group of PVA and scraped tire rubber fiber (STRF). The acoustic absorption coefficient of pure PVA film and waste scraped tire rubber fiber (STRF) reinforced PVA films were investigated in the range of audio frequency 200 Hz to 2 kHz.