The effect of alkali treatment and filler size on the properties of sawdust/UPR composites based on recycled PET wastes

Ishak Ahmad, Z. Mosadeghzad, Rusli Daik, A. Ramli

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In this study, natural sawdust fillers from acacia were mixed with unsaturated polyester resin (UPR), which was prepared by recycling of polyethylene terephthalate (PET) waste bottles to prepare sawdust/UPR composite. PET wastes were recycled through glycolysis and depolymerized to produce a formulation for the resin. The effects of alkali treatment, filler content, and filler size on the tensile, flexural, hardness, and water absorption of the composites were investigated. The results show that the modulus of both tensile and flexural increased with increasing filler contents, but the tensile and flexural strength of composites decreased. The size of sawdust also played a significant role in the mechanical properties, with smaller size sawdust producing higher strength and modulus. This is due to the greater surface area for filler-matrix interaction. The results also show that alkali treatment causes a better adhesion between sawdust and UPR matrix and improves the mechanical properties of the composites. Furthermore, surface treatment reduced the water absorption of composites.

Original languageEnglish
Pages (from-to)3651-3658
Number of pages8
JournalJournal of Applied Polymer Science
Volume109
Issue number6
DOIs
Publication statusPublished - 15 Sep 2008

Fingerprint

Sawdust
Polyethylene Terephthalates
Polyester resins
Composite Resins
Alkalies
Polyethylene terephthalates
Fillers
Composite materials
Water absorption
Mechanical properties
Bottles
Bending strength
Surface treatment
Recycling
Tensile strength
Adhesion
Resins
Hardness

Keywords

  • Alkali treatment
  • Composite
  • Natural filler
  • PET recycling
  • UPR

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

The effect of alkali treatment and filler size on the properties of sawdust/UPR composites based on recycled PET wastes. / Ahmad, Ishak; Mosadeghzad, Z.; Daik, Rusli; Ramli, A.

In: Journal of Applied Polymer Science, Vol. 109, No. 6, 15.09.2008, p. 3651-3658.

Research output: Contribution to journalArticle

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