Improving Sound Absorption Property of Polyurethane Foams by Adding Tea-Leaf Fibers

By B. Ekici, A. Kentli, Haluk Kucuk. 2012

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Improved Sound Absorption Properties of Polyurethane Foam Mixed with Textile Waste (2016, background): “Thus, researchers have used and studied fibrous waste with various characteristics to obtain sound absorbing materials: corn cob [11], cotton [12], hemp fibers [13], jute fibers [14], textile fibers [15], agricultural waste [16], coconut fibers [17], cellulose fibers [18], tea-leaf fibers [19] and k”
Acoustic Absorption of Natural Fiber Composites (2016, background): “To eliminate these problems, a few researchers like [5– 8] directed their attention in finding sustainable eco-friendly composites with the combination of natural fiber and rubber granular materials or conventional fiber and biogranular materials, which can be named as fibrogranular composites.”
Recent Developments in Luffa Natural Fiber Composites: Review (2020, methodology): “The addition of luffa fibers into a polymeric matrix caused it to exhibit profusely high acoustic properties in the end NFC at all frequencies, since it improved the soundproofing to four times higher at moderate frequency levels [45].”