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Influence of Multilayer Textile Biopolymer Foam Doped with Titanium Dioxide for Sound Absorption Materials

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Abstract:

Biopolymer foam was prepared by the reaction of bio-monomer based on vegetable oil with commercial Polymethane Polyphenyl Isocyanate (Modified Polymeric-MDI) and titanium dioxide (TiO2). The acoustic study of biopolymer foam with 2.5% TiO2 loading was examined by impedance tube test according to the ASTM E-1050 and laminated with three types of textile such as polyester, cotton and single knitted jersey. It was revealed that the thicker the fabric the higher the sound absorption coefficient (α) at low frequency level. The higher the number of layers or thickness of the fabric, the sound absorption through the fabric increases at low frequency but after the maximum it remains almost unaltered. Three layer of cotton fabric gives maximum α approximately equal to 0.578 which is 1.472mm thickness at low frequency level of 1000-2000Hz and single knitted jersey gives maximum α at 3th layer. Meanwhile , the α of biopolymer foam with 2.5% TiO2 loading laminated with polyester fabric approximately equal to 1 at lower frequency level of 1000-2000Hz with lower thickness that is 0.668mm. Polyester fabric with lowest thickness shows better α at lower frequency level due to the structure of the fabric. The relationships among the fiber properties such as fiber density, fiber diameter, fibrous material layer were considered as a factor that influences the sound absorption property.

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Periodical:

Key Engineering Materials (Volumes 594-595)

Pages:

750-754

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.594-595.750

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Online since:

December 2013

Authors:

Anika Zafiah M. Rus, Nik M. H. Normunira, Rahimah Abd Rahim

Keywords:

Methylene Diphenyl Diisocyanate (MDI), Polyester Fabric, Sound Absorption, Titanium Dioxide

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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