Influence of the base and diluent methacrylate monomers on the polymerization stress and its determinants

N. R G Frões-Salgado, L. C. Boaro, B. Pick, Carmem Pfeifer, C. E. Francci, M. M. Méier, R. R. Braga

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The aim of this study was to evaluate the effect of the association between bisphenol-A diglycidyl dimethacrylate (BisGMA) or its ethoxylated version (BisEMA) with diluents derived from the ethylene glycol dimethacrylate (EGDMA), with increasing number of ethylene glycol units (1: EGDMA, 2: DEGDMA, 3: TEGDMA, or 4: TETGDMA), or trimethylol propane trimethacrylate (TMPTMA) or 1,10-decanediol dimethacrylate (D3MA) on polymerization stress, volumetric shrinkage, degree of conversion, maximum rate of polymerization (Rpmax), and elastic modulus of experimental composites. BisGMA containing formulations presented lower shrinkage and stress but higher modulus and Rpmax than those containing BisEMA. TMPTMA presented the lowest stress among all diluents, as a result of lower conversion. EGDMA, DEGDMA, TEGDMA, and TETGDMA presented similar polymerization stress which was higher than the stress presented by D3MA and TMPTMA. D3MA presented similar conversion when copolymerized with both base monomers. The other diluents presented higher conversion when associated with BisEMA. EGDMA showed similar shrinkage compared with DEGDMA and higher than the other diluents. The lower conversion achieved by TMPTMA did not jeopardize its elastic modulus, similar to the other diluents. Despite the similar conversion presented by D3MA in comparison with EGDMA and DEGDMA, its lower elastic modulus may limit its use. Rather than proposing new materials, this study provides a systematic evaluation of off the shelf monomers and their effects on stress development, as highlighted by the analysis of conversion, shrinkage and modulus, to aid the optimization of commercially available materials.

Original languageEnglish (US)
Pages (from-to)2985-2991
Number of pages7
JournalJournal of Applied Polymer Science
Volume123
Issue number5
DOIs
StatePublished - Mar 5 2012
Externally publishedYes

Fingerprint

Methacrylates
Ethylene glycol
Monomers
Polymerization
Propane
Elastic moduli
Ethylene Glycol
ethylene dimethacrylate
Association reactions
trimethylolpropane trimethacrylate
Composite materials

Keywords

  • dimethacrylates
  • infrared spectroscopy
  • modulus
  • polymerization stress
  • volumetric shrinkage

ASJC Scopus subject areas

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

Cite this

Frões-Salgado, N. R. G., Boaro, L. C., Pick, B., Pfeifer, C., Francci, C. E., Méier, M. M., & Braga, R. R. (2012). Influence of the base and diluent methacrylate monomers on the polymerization stress and its determinants. Journal of Applied Polymer Science, 123(5), 2985-2991. https://doi.org/10.1002/app.34947

Influence of the base and diluent methacrylate monomers on the polymerization stress and its determinants. / Frões-Salgado, N. R G; Boaro, L. C.; Pick, B.; Pfeifer, Carmem; Francci, C. E.; Méier, M. M.; Braga, R. R.

In: Journal of Applied Polymer Science, Vol. 123, No. 5, 05.03.2012, p. 2985-2991.

Research output: Contribution to journalArticle

Frões-Salgado, N. R G ; Boaro, L. C. ; Pick, B. ; Pfeifer, Carmem ; Francci, C. E. ; Méier, M. M. ; Braga, R. R. / Influence of the base and diluent methacrylate monomers on the polymerization stress and its determinants. In: Journal of Applied Polymer Science. 2012 ; Vol. 123, No. 5. pp. 2985-2991.
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