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<p>This study developed polyvinyl alcohol (PVA) biocomposites with varying weight percentages (wt.%) of <i>Allium cepa</i> L var. cepa peel particulates (ACPP) in place of traditional persistent plastic materials. FTIR analysis substantiated that the chemical groups in the films remained unchanged despite the different wt.% of ACPP. However, the inclusion of ACPP increased the crystalline size of the films. The film featuring 25 wt% ACPP exhibited optimum properties including the highest roughness, with an average roughness (Ra) of 119 nm, thermal stability up to 327 °C, maximum tensile strength (54 MPa) and tensile modulus (98.7 MPa). Nevertheless, higher wt.% ACPP negatively affected both elongation at break and increased water absorption to 134 % due to agglomeration of ACPP. Conversely, the addition of higher wt% facilitated a 30 % degradation rate relative to its initial weight. These findings suggest that PVA/ACPP composite films containing 25 wt% ACPP are suitable for applications like agricultural mulches.</p>

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Thermo mechanical evaluation of biodegradable composite films from poly (vinyl alcohol) sustainably reinforced with Allium cepa peel waste

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Baskaran M.,
  • Saravanakumar S. S.,
  • Rathinavel Subbiah

摘要

This study developed polyvinyl alcohol (PVA) biocomposites with varying weight percentages (wt.%) of Allium cepa L var. cepa peel particulates (ACPP) in place of traditional persistent plastic materials. FTIR analysis substantiated that the chemical groups in the films remained unchanged despite the different wt.% of ACPP. However, the inclusion of ACPP increased the crystalline size of the films. The film featuring 25 wt% ACPP exhibited optimum properties including the highest roughness, with an average roughness (Ra) of 119 nm, thermal stability up to 327 °C, maximum tensile strength (54 MPa) and tensile modulus (98.7 MPa). Nevertheless, higher wt.% ACPP negatively affected both elongation at break and increased water absorption to 134 % due to agglomeration of ACPP. Conversely, the addition of higher wt% facilitated a 30 % degradation rate relative to its initial weight. These findings suggest that PVA/ACPP composite films containing 25 wt% ACPP are suitable for applications like agricultural mulches.