Rice husk bio-filler reinforced polymer blends of recycled HDPE/PET: Three-dimensional stability under water immersion and mechanical performance

Ruey Shan Chen, Sahrim Ahmad, Sinyee Gan

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Green composite materials were made from agricultural and plastic wastes which were rice husk (RH), recycled high-density polyethylene (rHDPE), and recycled polyethylene terephthalate (rPET), by twin-screw extrusion and hot/cold pressing molding. The dimensional stability, orthotropic swelling, and mechanical performance of the green composites were determined as a function of bio-filler concentration for neat (uncompatibilized) and compatbilized rHDPE/rPET blend based composites. Water absorption and swelling results showed a linear increase with the RH concentration. The highest swelling occurred in the thickness of the composites, followed by the width and length, respectively. Water absorption and dimensional instability of compatibilized recycled polymer blend (rPB)-based composites were lower than those of neat rPB-based composites. As RH concentration increased, the flexural properties increased significantly. The optimum tensile strength and modulus were achieved at 70 wt% RH. It is interesting to note that compatibilization of polymer blend matrix had further increased the strength and elongation properties of composites.

Original languageEnglish
JournalPolymer Composites
DOIs
Publication statusAccepted/In press - 2016

Fingerprint

Dimensional stability
Polyethylene
Polymer blends
High density polyethylenes
Fillers
Water
Composite materials
Swelling
Polyethylene Terephthalates
Water absorption
Polyethylene terephthalates
Pressing (forming)
Compatibilizers
Molding
Extrusion
Elongation
Tensile strength
Elastic moduli
Plastics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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abstract = "Green composite materials were made from agricultural and plastic wastes which were rice husk (RH), recycled high-density polyethylene (rHDPE), and recycled polyethylene terephthalate (rPET), by twin-screw extrusion and hot/cold pressing molding. The dimensional stability, orthotropic swelling, and mechanical performance of the green composites were determined as a function of bio-filler concentration for neat (uncompatibilized) and compatbilized rHDPE/rPET blend based composites. Water absorption and swelling results showed a linear increase with the RH concentration. The highest swelling occurred in the thickness of the composites, followed by the width and length, respectively. Water absorption and dimensional instability of compatibilized recycled polymer blend (rPB)-based composites were lower than those of neat rPB-based composites. As RH concentration increased, the flexural properties increased significantly. The optimum tensile strength and modulus were achieved at 70 wt{\%} RH. It is interesting to note that compatibilization of polymer blend matrix had further increased the strength and elongation properties of composites.",
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