Effect of nano- and micro-alumina fillers on some properties of poly(methyl methacrylate) denture base composites

Fathie Kundie, Che Husna Azhari, Zainal Arifin Ahmad

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This research investigated the effects of alumina (Al2O3) micro- and nano-particles on poly(methyl methacrylate) (PMMA) denture base. Al2O3 was surface treated using (3-methacryloxypropyl)trimethoxysilane (γ-MPS), added to methyl methacrylate (MMA), and mixed with PMMA powder. The filler volume fractions in the micro-composites were 0.5, 1, 2, 5 and 7 wt. %, whereas those in the nano-composites were 0.13, 0.25, 0.5, 1, 2 and 5 wt. %. The treated fillers were examined using Fourier transform infrared spectroscopy (FTIR). The influence of filler size and loading on mechanical properties was studied using fracture toughness and flexural tests. The thermal stability of the PMMA/Al2O3 composites was investigated using thermogravimetric analysis (TGA). In addition, the water absorption and solubility characteristic of the prepared composites was also investigated. The FTIR spectra showed new absorption bands, indicating the occurrence of surface modifications. Both micro- and nanoscale particles showed increased fracture toughness. The maximum value of 2.02 MPa·m1/2 was achieved with the addition of 0.5 wt. % nano-Al2O3, which accounts for a 39 % increase. In contrast to the flexural strength, the flexural modulus improved with increasing filler content. The micro-composites showed higher thermal stability than nano-composites. The water absorption and solubility of the prepared composites were slightly higher than those of the control. The use of low concentrations of Al2O3 nanoparticles may be of considerable interest in future studies to improve the mechanical properties of PMMA denture base.

Original languageEnglish
Pages (from-to)75-91
Number of pages17
JournalJournal of the Serbian Chemical Society
Volume83
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

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Dental prostheses
Aluminum Oxide
Polymethyl Methacrylate
Fillers
Composite materials
Water absorption
Fracture toughness
Thermodynamic stability
Solubility
Mechanical properties
Methacrylates
Bending strength
Powders
Surface treatment
Thermogravimetric analysis
Absorption spectra
Volume fraction
Nanoparticles

Keywords

  • Mechanical properties
  • Nano-particles
  • PMMA denture base
  • Toughening mechanisms
  • Water absorption
  • Water solubility

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Effect of nano- and micro-alumina fillers on some properties of poly(methyl methacrylate) denture base composites. / Kundie, Fathie; Azhari, Che Husna; Ahmad, Zainal Arifin.

In: Journal of the Serbian Chemical Society, Vol. 83, No. 1, 01.01.2018, p. 75-91.

Research output: Contribution to journalArticle

Kundie, Fathie ; Azhari, Che Husna ; Ahmad, Zainal Arifin. / Effect of nano- and micro-alumina fillers on some properties of poly(methyl methacrylate) denture base composites. In: Journal of the Serbian Chemical Society. 2018 ; Vol. 83, No. 1. pp. 75-91.
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