Scholarlink

<p>This study explores the reuse of post-consumer polyethylene terephthalate (PET) bottles through the development of recycled PET (RPET)/perlite composites exhibiting enhanced mechanical stiffness and thermal insulation properties. Untreated and alkaline-treated perlite were incorporated into the RPET matrix at filler loadings of 0–20 wt% using solid-state blending followed by hot compression molding. Structural, morphological, thermal, and mechanical properties were evaluated using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), thermal conductivity measurements, dynamic modulus obtained through vibration analysis, and bending rigidity and strength through a three-point bending test. The incorporation of perlite reduced the thermal conductivity of RPET from 0.159&#xa0;W·m⁻¹·K⁻¹ to 0.10&#xa0;W·m⁻¹·K⁻¹ at 20 wt% filler loading. Mechanical testing showed a progressive increase in flexural modulus with filler content, reaching approximately 4.5 GPa for the composite containing 20 wt% alkaline-treated perlite, exceeding both neat RPET and composites prepared with untreated perlite. XRD analysis indicated a decrease in RPET crystallinity with increasing filler content, while TGA revealed a slight increase in thermal stability (Tonset) in filled systems. The results demonstrate that surface-modified perlite can improve the stiffness and insulation performance of RPET composites, highlighting their potential for lightweight structural and insulating applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development and performance evaluation of composite material prepared from recycled polyethylene terephthalate (PET) and perlite

  • 期刊论文

  • 发表日期：

    2026年4月30日

查看全文
  • Ikram Khabach,
  • Mounir Kriraa,
  • Jamal Arbaoui,
  • Mounir El Achaby,
  • Mohamed Ouakarrouch,
  • Abdelkrim Bennani,
  • Ali Limam,
  • Taha El Assimi

摘要

This study explores the reuse of post-consumer polyethylene terephthalate (PET) bottles through the development of recycled PET (RPET)/perlite composites exhibiting enhanced mechanical stiffness and thermal insulation properties. Untreated and alkaline-treated perlite were incorporated into the RPET matrix at filler loadings of 0–20 wt% using solid-state blending followed by hot compression molding. Structural, morphological, thermal, and mechanical properties were evaluated using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), thermal conductivity measurements, dynamic modulus obtained through vibration analysis, and bending rigidity and strength through a three-point bending test. The incorporation of perlite reduced the thermal conductivity of RPET from 0.159 W·m⁻¹·K⁻¹ to 0.10 W·m⁻¹·K⁻¹ at 20 wt% filler loading. Mechanical testing showed a progressive increase in flexural modulus with filler content, reaching approximately 4.5 GPa for the composite containing 20 wt% alkaline-treated perlite, exceeding both neat RPET and composites prepared with untreated perlite. XRD analysis indicated a decrease in RPET crystallinity with increasing filler content, while TGA revealed a slight increase in thermal stability (Tonset) in filled systems. The results demonstrate that surface-modified perlite can improve the stiffness and insulation performance of RPET composites, highlighting their potential for lightweight structural and insulating applications.