The Development of Sound-Absorbers Made of Nipa Palm-Latex Sponge Composites Utilizing Vulcanization Method with Steam

  • Supphawut Benjakul Nakhon Si Thammarat Rajabhat University
  • Pathit Suklim Nakhon Si Thammarat Rajabhat University
  • Wanicha Chansathien Nakhon Si Thammarat Rajabhat University
  • Sorasak Danworaphong Walailuk University
  • Ruthaiwan Bunkrongcheap Songkhla Rajabhat University
Keywords: Mingle nipa palm, latex sponge, vulcanization method, sound-absorbing materials


This research is to develop and investigate the physical properties of sound-absorbing materials made from latex sponge mixed with nipa palm utilizing the process of steam-forming latex sponge material mixed with nipa palm. By regulating the amount of nipa palm and latex compound at a ratio of 0-1 %WT, it was determined that the amount of nipa palm added had no effect on the physical properties, density, or porosity. The latex sponge blended with 0 to 0.6 weight percent of nipa palm is an excellent sound-absorbing material, the sound absorption coefficient is greater than 0.89 in the frequency range of 1500 – 2300 Hz, and when mixed in a latex sponge material at a concentration greater than 0.8% WT, the material absorbs sound more efficiently at lower frequencies. The latex sponge - nipa palm composites can be utilized in general speech-focused spaces, such as conference rooms, living rooms, singing practice rooms, recording rooms, and radio broadcasting rooms, among others.