Journal of Materials Science

, Volume 24, Issue 1, pp 363–371

The influence of poly(acrylic acid) molecular weight on the fracture toughness of glass-ionomer cements

  • R. G. Hill
  • A. D. Wilson
  • C. P. Warrens
Papers

DOI: 10.1007/BF00660982

Cite this article as:
Hill, R.G., Wilson, A.D. & Warrens, C.P. J Mater Sci (1989) 24: 363. doi:10.1007/BF00660982

Abstract

A linear elastic fracture mechanics approach has been used to characterize failure in glass-ionomer cements. The toughness, fracture toughness, flexural strength and inherent flaw size increase with the molecular weight of the poly(acrylic acid), whilst the Young's modulus remains approximately constant. The dependence of toughness on poly(acrylic acid) molecular weight is not as large as predicted by a reptation/chain pull out model for fracture and this is thought to be a result of the weak ionic crosslinks formed during the cement reaction.

Copyright information

© Chapman and Hall Ltd 1989

Authors and Affiliations

  • R. G. Hill
    • 1
  • A. D. Wilson
    • 1
  • C. P. Warrens
    • 1
  1. 1.Laboratory of the Government Chemist, Department of Trade and IndustryCornwall HouseLondonUK
  2. 2.School of Materials Science and PhysicsThames PolytechnicLondonUK

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