Influence of High Doping of TiO₂ of Polymeric Foam for Acoustic Study

Abstract:

Titanium dioxide represents an effective photocatalyst for water and air purification and for self-cleaning surfaces. The purpose of this study is to determine sound absorption property of polymer foam of high doping of Titanium Dioxide (TiO₂) which are 20%, 40%, 60%, 80% and 100%. The acoustic study of the samples was measured by using impedance tube test according to the ASTM E-1050 to determined sound absorption coefficient (α) and noise reduction coefficient method (NRC). The highest α is 0.999 observed from the polymer foam doped with 60% of TiO₂ at high frequency level of 4000 Hz. Meanwhile, the highest doping of TiO₂ polymer foam shows remarkable characteristic of low level frequency absorption at 2000 Hz. Thus, different percentage of TiO₂ doped in polymer foam can be used successfully to alter the characteristic of sound absorption property in a systematic way according to the request application.

• Periodical: Key Engineering Materials (Volumes 594-595)
• Pages: 755-759
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.594-595.755
• Online since: December 2013
• Authors: Anika Zafiah M. Rus, M.A. Bainun Akmal, N.N. Mat Hassan
• Keywords: High Doping, Sound Absorption Coefficient, Titanium Dioxide

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