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<p>With the increased focus on sustainable materials, the current research analyses the sound absorption coefficient of a composite made from <i>Saccharum spontaneum</i> (cane grass). The composite uses crushed and randomly oriented, cane parenchyma with polyvinyl alcohol and rice starch. The study compares different fibre configurations and thicknesses of the composite. Composites with thicknesses of 20, 30, 40 and 60 mm were tested. It was found that cane parenchyma-based composites demonstrate superior sound absorption characteristics in comparison to synthetic fibre-based composites, over a wide frequency range. Increasing the thickness of the material results in a higher sound absorption coefficient. Remarkably, with a 60 mm CPRPVA sample, sound absorption coefficient greater than 0.9 was achieved for frequencies of 500–5000 Hz. For other configurations, a better sound absorption coefficient was achieved in comparison to other natural fibre composites.</p>

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Cane grass core-based green acoustic insulator

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Deepak Kumar Maurya,
  • C S Upadhyay,
  • Rajat Arora

摘要

With the increased focus on sustainable materials, the current research analyses the sound absorption coefficient of a composite made from Saccharum spontaneum (cane grass). The composite uses crushed and randomly oriented, cane parenchyma with polyvinyl alcohol and rice starch. The study compares different fibre configurations and thicknesses of the composite. Composites with thicknesses of 20, 30, 40 and 60 mm were tested. It was found that cane parenchyma-based composites demonstrate superior sound absorption characteristics in comparison to synthetic fibre-based composites, over a wide frequency range. Increasing the thickness of the material results in a higher sound absorption coefficient. Remarkably, with a 60 mm CPRPVA sample, sound absorption coefficient greater than 0.9 was achieved for frequencies of 500–5000 Hz. For other configurations, a better sound absorption coefficient was achieved in comparison to other natural fibre composites.