Acoustic Benefits of Ecofriendly Spent Tea Leaves Filled Porous Material

This paper demonstrates the feasibility of spent tea leaf (STL) fiber as an eco-friendly sound absorbing material. STL fiber is a by-product which was extracted from tea plant. STL are rich in polyphenols (tannins) which cause high resistance to fungal and termites, and high resistance to fire. In a...

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Bibliographic Details
Published in:Key engineering materials 2017-06, Vol.739, p.125-134
Main Authors: Putra, Azma, Sivarao, Subramonian, Mohamad, Noraiham, Ahsan, Qumrul, Mohd Nor, Mohd Jailani, Wong, Kylie
Format: Article
Language:English
Subjects:
Absorptivity
Acoustic absorption
Acoustic insulation
Acoustic properties
Acoustics
Byproducts
Feasibility
Flammability
Fungi
High resistance
Impedance
Insulators
Latex
Noise control
Polyphenols
Polyurethane resins
Porous materials
Quality
Sound
Tannins
Tea
Transmission loss
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Summary:This paper demonstrates the feasibility of spent tea leaf (STL) fiber as an eco-friendly sound absorbing material. STL fiber is a by-product which was extracted from tea plant. STL are rich in polyphenols (tannins) which cause high resistance to fungal and termites, and high resistance to fire. In addition, STL are hollow and cellular in nature and thus perform well as acoustic and thermal insulators. Three different grades of STL were studied and the acoustic property was analyzed in terms of sound absorption coefficient and transmission loss. Experimental measurements of sound absorption coefficient in impedance tube are conducted. It was found that finest STL fiber grade exhibits better acoustic performance among others. Furthermore, the effect of latex binder on the acoustic property of STL fiber was also analyzed. Results suggest that the types of binder such as polyurethane and latex influenced the acoustic performance of STL fiber.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.739.125